Fedor Ratnikov
- Associate Professor:Faculty of Computer Science / Big Data and Information Retrieval School
- Leading Research Fellow:Faculty of Computer Science / Laboratory of Methods for Big Data Analysis
- Fedor Ratnikov has been at HSE University since 2016.
Education and Degrees
- 1994
Candidate of Sciences* (PhD)
- 1986
Degree
Moscow Institute of Physics and Technology
* Candidate of Sciences
According to the International Standard Classification of Education (ISCED) 2011, Candidate of Sciences belongs to ISCED level 8 - "doctoral or equivalent", together with PhD, DPhil, D.Lit, D.Sc, LL.D, Doctorate or similar. Candidate of Sciences allows its holders to reach the level of the Associate Professor.
According to the International Standard Classification of Education (ISCED) 2011, Candidate of Sciences belongs to ISCED level 8 - "doctoral or equivalent", together with PhD, DPhil, D.Lit, D.Sc, LL.D, Doctorate or similar. Candidate of Sciences allows its holders to reach the level of the Associate Professor.
Courses (2022/2023)
- Deep Learning (Mago-Lego; 1, 2 module)Eng
- Deep Learning (Master’s programme; Faculty of Computer Science; 2 year, 1, 2 module)Eng
- Machine Learning for a Model Construction (Mago-Lego; 4 module)Rus
- Machine Learning for a Model Construction (Master’s programme; HSE Tikhonov Moscow Institute of Electronics and Mathematics (MIEM HSE); 1 year, 4 module)Rus
- Research Seminar "Data Analysis in the Natural Sciences" (Bachelor’s programme; Faculty of Computer Science; 4 year, 1-3 module)Eng
- Past Courses
Courses (2021/2022)
- Deep Learning (Master’s programme; Faculty of Computer Science; 2 year, 1, 2 module)Eng
- Machine Learning for a Model Construction (Master’s programme; HSE Tikhonov Moscow Institute of Electronics and Mathematics (MIEM HSE); 1 year, 4 module)Rus
- Reinforcement Learning (Master’s programme; Faculty of Computer Science; 1 year, 3, 4 module)Rus
Courses (2020/2021)
- Deep Learning (Master’s programme; Faculty of Computer Science; 2 year, 1, 2 module)Eng
- Principles of Mathematical Models Design (Master’s programme; HSE Tikhonov Moscow Institute of Electronics and Mathematics (MIEM HSE); 1 year, 4 module)Rus
- Reinforcement Learning (Master’s programme; Faculty of Computer Science; 1 year, 3, 4 module)Rus
Courses (2019/2020)
- Deep Learning (Master’s programme; Faculty of Computer Science; 2 year, 1, 2 module)Rus
- Principles of Mathematical Models Design (Master’s programme; HSE Tikhonov Moscow Institute of Electronics and Mathematics (MIEM HSE); 1 year, 4 module)Rus
- Reinforcement Learning (Bachelor’s programme; Faculty of Computer Science; 4 year, 3 module)Rus
20233
- Article Ratnikov F., Rogachev A., Mokhnenko S., Maevskiy A., Derkach D., Davis A., Kazeev N., Anderlini L., Barbetti M., Gianluca Siddi B. A full detector description using neural network driven simulation // Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2023. Vol. 1046. P. 167591-167592. doi (in press)
- Article Rogachev A., Ratnikov F. GAN with an auxiliary regressor for the fast simulation of the electromagnetic calorimeter response // Journal of Physics: Conference Series. 2023. Vol. 2438. No. 1 doi
- Article Boldyrev A., Derkach D., Ratnikov F., Ustyuzhanin A. Toward the end-to-end optimization of particle physics instruments with differentiable programming // Reviews in Physics. 2023. No. 100085. P. 1-117. doi (in press)
202235
- Article Aaij R., Adinolfi M., Aiola S., Akar S., Albrecht J., Alexander M., Amato S., A. Boldyrev, D. Derkach, M. Hushchyn, F. Ratnikov, A. Ryzhikov. A Comparison of CPU and GPU Implementations for the LHCb Experiment Run 3 Trigger // Computing and Software for Big Science. 2022. No. 6. Article 1. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Maevskiy D. S., Mokhnenko S. Analysis of Neutral B-Meson Decays into Two Muons // Physical Review Letters. 2022. Vol. 128. No. 4. Article 041801. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Arzymatov K., Belavin V., Borisyak M., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Angular Analysis of D0→π+π−μ+μ− and D0→K+K−μ+μ− Decays and Search for CP Violation // Physical Review Letters. 2022. Vol. 128. No. 22. Article 221801. doi
- Book Derkach D., Ratnikov F., Ustyuzhanin A. Artificial Intelligence for High Energy Physics. World Scientific Publishing Co., 2022. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Ratnikov F., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Ryzhikov A., Ustyuzhanin A., Mokhnenko S. Centrality determination in heavy-ion collisions with the LHCb detector // Journal of Instrumentation. 2022. Vol. 17. Article P05009. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., A. Philippov, Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states // Journal of High Energy Physics. 2022. No. 7 doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Afsharnia H., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Evidence for a New Structure in the J/ψp and J/ψ(anti-)p Systems in B0s→J/ψp(anti-)p Decays // Physical Review Letters. 2022. Vol. 128. No. 6. Article 062001. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. First Measurement of the Z → μ + μ − Angular Coefficients in the Forward Region of pp Collisions at √s = 13 TeV // Physical Review Letters. 2022. Vol. 129. No. 9. Article 091801. doi
- Article Aaij R., Abdelmotteleb A., Abellán Beteta C., Abudinen Gallego F., Ackernley T., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., A. Philippov, Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Identification of charm jets at LHCb // Journal of Instrumentation. 2022. Vol. 17. Article P02028. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Ratnikov F., Popov S., Ryzhikov A., Ustyuzhanin A., Mokhnenko S., Maevskiy D. S. J/ψ photoproduction in Pb-Pb peripheral collisions at √s = 5TeV // Physical Review C - Nuclear Physics. 2022. Vol. 105. No. 3. Article L032201. doi
- Article Mokhnenko S., Ratnikov F., Kazeev N., Maevskiy A., Anderlini L., Barbetti M., Corti G., Davis A., Siddi B. G., Zehua X. Lamarr: the ultra-fast simulation option for the LHCb experiment // proceedings of science, sissa, italy. 2022. Vol. ICHEP2022. P. 233. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Afsharnia H., Aidala C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of prompt charged-particle production in pp collisions at s√ = 13 TeV // Journal of High Energy Physics. 2022. Vol. 2022. No. 1. Article 166. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Afsharnia H., Aidala C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of the B0s→μ+μ− decay properties and search for the B0→μ+μ− and B0s→μ+μ−γ decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2022. Vol. 105. No. 1. Article 012010. doi
- Article Aaij R., Abellán Beteta C., Adeva B., Ackernley T., Afsharnia H., Adinolfi M., Aidala C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of the Nuclear Modification Factor and Prompt Charged Particle Production in p-Pb and pp Collisions at √sNN=5 TeV // Physical Review Letters. 2022. Vol. 128. No. 14. Article 142004. doi
- Article Derkach D., Maevskiy A., Karpov M., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Boldyrev A., Hushchyn M. Measurement of the W boson mass // Journal of High Energy Physics. 2022. Vol. 2022. No. 01. Article 36. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Boldyrev A., Derkach D., Hushchyn M., Iniukhin A., Karpov M., Maevskiy A., Mokhnenko S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of the charm mixing parameter y − yKπ using two-body D0 meson decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2022. Vol. 105. No. 9. Article 092013. doi
- Article Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Arzymatov K., Belavin V., Borisyak M., Philippov A., Popov S. Measurement of the lifetimes of promptly produced Ωc0 and Ξc0 baryons // Science Bulletin. 2022. Vol. 67. No. 5. P. 479-487. doi
- Article Philippov A., Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ratnikov F., Ryzhikov A., Popov S., Ustyuzhanin A. Measurement of the photon polarization in Λ0b→Λγ decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2022. No. 105. Article L051104. doi
- Article Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Huschin M., Karpov M., Maevskiy A., Mokhnenko S., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of χc1(3872) production in proton-proton collisions at √s = 8 and 13 TeV // Journal of High Energy Physics. 2022. Article 131. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of Two New Excited Ξ0b States Decaying to Λ0bK−π+ // Physical Review Letters. 2022. Vol. 128. No. 16. Article 162001. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Arzymatov K., Belavin V., Borisyak M., Ustyuzhanin A., Ratnikov F., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ryzhikov A., Popov S. Observation of an exotic narrow doubly charmed tetraquark // Nature Physics. 2022. No. 18. P. 751-754. doi
- Article Aaij R., Abdelmotteleb A., Abellán Beteta C., Abudinén F., Ackernley T., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of the B0 →¯D*0 K+ π− and B0s →¯D*0 K−π+ decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2022. Vol. 105. No. 7. Article 072005. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Boldyrev A., Belavin V., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., A. Philippov, Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of the Decay Λ0b→Λ+cτ−¯ντ // Physical Review Letters. 2022. Vol. 128. No. 19. Article 191803. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Boldyrev A., Derkach D., Hushchyn M., Iniukhin A., Karpov M., Maevskiy A., Mokhnenko S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of the doubly charmed baryon decay Ξ++ → Ξ′+π+ // Journal of High Energy Physics. 2022. Vol. 2022. No. 5. Article 38. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Hushchyn M., Derkach D., Karpov M., Maevskiy A., Mokhnenko S., A. Philippov, Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of Λ0b → D+pπ−π− and Λ0b → D*+pπ−π− decays // Journal of High Energy Physics. 2022. Vol. 2022. No. 3. Article 153. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Precise determination of the 𝐵0s–𝐵⎯⎯⎯⎯0s oscillation frequency // Nature Physics. 2022. No. 18. P. 1-5. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Search for massive long-lived particles decaying semileptonically at s√=13TeV // The European Physical Journal C - Particles and Fields. 2022. No. 82. Article 373. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Ackernley T., Adeva B., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Maevskiy D. S., Mokhnenko S. Search for the radiative Ξ−b→Ξ−γ decay // Journal of High Energy Physics. 2022. Vol. 2022. No. 1. Article 69. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Searches for rare B0s and B0 decays into four muons // Journal of High Energy Physics. 2022. Vol. 2022. No. 3. Article 109. doi
- Article Philippov A., Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Borisyak M., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Study of B+c decays to charmonia and three light hadrons // Journal of High Energy Physics. 2022. Article 65. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Adeva B., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Study of Z Bosons Produced in Association with Charm in the Forward Region // Physical Review Letters. 2022. No. 128. Article 082001. doi
- Article Aaij R., Beteta C. A., Ackernley T., Adeva B., Adinolfi M., Afsharnia H., Aidala C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Gaintseva T., Hushchyn M., Karpov M., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Study of coherent J/ψ production in lead-lead collisions at sNN−−−√ = 5 TeV // Journal of High Energy Physics. 2022. Vol. 2022. Article 117. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Arzymatov K., Belavin V., Borisyak M., Ratnikov F., Ustyuzhanin A., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ryzhikov A., Popov S. Study of the doubly charmed tetraquark T+cc // Nature Communications. 2022. No. 13. Article 3351. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Boldyrev A., Derkach D., Hushchyn M., Maevskiy A., Karpov M., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Mokhnenko S. Test of lepton universality in beauty-quark decays // Nature Physics. 2022. No. 18. P. 277-282. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinén F., Ackernley T., Arzymatov K., Belavin V., Borisyak M., Ratnikov F., Ustyuzhanin A., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ryzhikov A., Popov S., Philippov A. Tests of Lepton Universality Using B0→K0Sℓ+ℓ− and B+→K*+ℓ+ℓ− Decays // Physical Review Letters. 2022. No. 128. Article 191802. doi
202141
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Angular Analysis of the B+→K*+μ+μ− Decay // Physical Review Letters. 2021. Vol. 126. No. 16. Article 161802. doi
- Article Aaij R., Beteta C. A., Ackernley T., Adeva B., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Maevskiy A., Попов С. А., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Angular analysis of 𝐵0→𝐷∗−𝐷∗+𝑠 with 𝐷∗+𝑠→𝐷+𝑠𝛾 decays // Journal of High Energy Physics. 2021. Article 177. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Philippov A., Popov A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Evidence of a J/ψΛ structure and observation of excited Ξ− states in the Ξ−b→J/ψΛK− decay // Science Bulletin. 2021. Vol. 66. No. 13. P. 1278-1287. doi
- Chapter Ratnikov F., Rogachev A. Fast simulation of the electromagnetic calorimeter response using Self-Attention Generative Adversarial Networks, in: EPJ Web of Conferences Vol. 251: 25th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2021). EDP Sciences, 2021. Ch. 03043. doi
- Article LHCb C., Arzymatov K., Belavin V., Borisyak M., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. First measurement of the CP-violating phase in Bs0 → J / ψ ( → e + e - ) ϕ decays // The European Physical Journal C - Particles and Fields. 2021. Vol. 81. No. 11. Article 1026. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., T. Gaintseva, M. Hushchyn, Kazeev N., Maevskiy A., A. Philippov, S. Popov, Ratnikov F., Ryzhikov A., Ustyuzhanin A. First observation of the decay B0s→K−μ+νμ and measurement of |Vub|/|Vcb| // Physical Review Letters. 2021. Vol. 126. No. 8. Article 081804. doi
- Article Boldyrev A., Derkach D., Ratnikov F., Shevelev A. Machine Learning in Calorimeter optimization // Journal of Physics: Conference Series. 2021. Vol. 1740. No. 012047. Article 012047. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Measurement of CP Violation in the Decay B+→K+π0 // Physical Review Letters. 2021. Vol. 126. No. 9. Article 091802. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., T. Gaintseva, M. Hushchyn, Karpov M., Kazeev N., Maevskiy A., A. Philippov, S. Popov, Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of CP observables in B±→D(∗)K± and B±→D(∗)π± decays using two-body D final states // Journal of High Energy Physics. 2021. Article 81. doi
- Article The LHCb c., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Arzymatov K., Belavin V., Borisyak M., Philippov A., Popov S. Measurement of J/ψ production cross-sections in pp collisions at s√ = 5 TeV // Journal of High Energy Physics. 2021. Article 181. doi
- Article LHCb C., Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Gaintseva T., Hushchyn M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Measurement of differential 𝑏𝑏⎯⎯⎯- and 𝑐𝑐⎯⎯⎯-dijet cross-sections in the forward region of pp collisions at 𝑠√ = 13 TeV // Journal of High Energy Physics. 2021. Vol. 2. Article 23. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of the CKM angle γ and B0s−B0s¯¯¯¯¯¯ mixing frequency with B0s→D∓sh±π±π∓ decays // Journal of High Energy Physics. 2021. Vol. 2021. No. 3. P. 1-45. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Гайнцева Т. А., Hushchyn M., Kazeev N., Maevskiy A., Филиппов А. А., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., LHCb C. Measurement of the CKM angle γ in B± → DK± and B± → Dπ± decays with D → 𝐾0Sh+h− // Journal of High Energy Physics. 2021. Vol. 2021. No. 2. Article 169. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Measurement of the branching fraction of the B0→D+sπ− decay // The European Physical Journal C - Particles and Fields. 2021. Vol. 81. Article 314. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Karpov M., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Measurement of the prompt-production cross-section ratio σ(χc2)/σ(χc1) in pPb collisions at sNN=8.16 TeV // Physical Review C - Nuclear Physics. 2021. Vol. 103. No. 6. Article 064905. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., T. Gaintseva, M. Hushchyn, Karpov M., Kazeev N., Maevskiy A., A. Philippov, S. Popov, Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of CP violation in two-body B0(s)-meson decays to charged pions and kaons // Journal of High Energy Physics. 2021. Vol. 2021. No. 3. Article 75. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Гайнцева Т. А., Hushchyn M., Kazeev N., Maevskiy A., Филиппов А. А., Попов С. А., Ratnikov F., Ryzhikov A., Ustyuzhanin A., LHCb C. Observation of Multiplicity Dependent Prompt χc1(3872) and ψ(2S) Production in pp Collisions // Physical Review Letters. 2021. Vol. 126. No. 9. Article 092001. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Филиппов А. С. Observation of New Resonances Decaying to J=ψK+ and J=ψφ // Physical Review Letters. 2021. Vol. 127. No. 8. Article 082001. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of a new excited D+s meson in B0 to D−D+K+π− decays // Physical Review Letters. 2021. Vol. 126. No. 12. P. 1-11. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Observation of a new Ξ0b state // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2021. Vol. 103. No. 1. Article 012004. doi
- Article Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of new excited 𝐵0𝑠 states // The European Physical Journal C - Particles and Fields. 2021. Article 601. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Observation of the decay Λ0b → χc1pπ− // Journal of High Energy Physics. 2021. Vol. 5. Article 95. doi
- Article Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Abudinen Gallego F. J., Ackernley T., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of the suppressed Lambda 0 b rightarrow DpK - decay with D rightarrow K + pi - and measurement of its CP asymmetry // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2021. Vol. 104. No. 11. Article 112008. doi
- Article Aaij R., Belavin V., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Observation of the Λ0b→Λ+cK+K−π− decay // Physics Letters B. 2021. No. 815. Article 136172. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Филиппов А. С. Observation of the 𝐵0𝑠 → D*±D∓ decay // Journal of High Energy Physics. 2021. Vol. 2021. No. 3. P. 1-18. doi
- Article Aaji R., Adeva B., Abellán Beteta C., Ackernley T., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Precise measurement of the fs/fd ratio of fragmentation fractions and of Bs0 decay branching fractions // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2021. Article 032005. doi
- Article Aaij R., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Arzymatov K., Belavin V., Philippov A., Popov S. Search for CP violation in Ξ−b→pK−K−decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2021. Vol. 104. No. 5. Article 052010. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Search for CP violation in 𝐷+(𝑠)→ℎ+𝜋0 and 𝐷+(𝑠)→ℎ+𝜂 decays // Journal of High Energy Physics. 2021. Vol. 6. Article 19. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Search for heavy neutral leptons in W+ → μ+μ± jet decays // The European Physical Journal C - Particles and Fields. 2021. Vol. 81. No. 248. Article 248. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Search for long-lived particles decaying to e±μ∓ν // The European Physical Journal C - Particles and Fields. 2021. Vol. 81. No. 261. P. 1-16. doi
- Article The LHCb collaboration -., Aaij R., Abdelmotteleb A. S., Abellán Beteta C., Ackernley T., Arzymatov K., Belavin V., Borisyak M., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Search for the doubly charmed baryon 𝛯+𝑐𝑐 in the 𝛯+𝑐𝜋−𝜋+ final state // Journal of High Energy Physics. 2021. Article 107. doi
- Article Aaij R., Abellán Beteta C., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Phillippov A. S., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., LHCb Collaboration -. Search for the doubly heavy baryons Ω0bc and Ξ0bc decaying to Λ+cπ− and Ξ+cπ− // Chinese Physics C. 2021. Vol. 45. No. 9. Article 093002. doi
- Article Aaij R., Beteta C. A., Ackernley T., Adeva B., Adinolfi M., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Karpov M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Search for the rare decay B0→J/ψϕ // Chinese Physics C. 2021. Vol. 45. No. 4. Article 043001. doi
- Article Aaji R., Arzymatov K., Belavin V., Borisyak M., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Searches for 25 rare and forbidden decays of D+ and 𝐷+𝑠, Ds+ mesons // Journal of High Energy Physics. 2021. Article 44. doi
- Article Ahdida C., Ratnikov F., Ustyuzhanin A., Zimmerman J. Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles // The European Physical Journal C - Particles and Fields. 2021. Vol. 81. Article 451. doi
- Article Ratnikov F. Sensitivity of the SHiP experiment to light dark matter // Journal of High Energy Physics. 2021. No. 199. P. 1-32. doi (in press)
- Article A. Maevskiy, F. Ratnikov, Zinchenko A., Riabov V. Simulating the time projection chamber responses at the MPD detector using generative adversarial networks // The European Physical Journal C - Particles and Fields. 2021. Vol. 81. Article 599. doi
- Article The LHCb c., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Mokhnenko S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Arzymatov K., Belavin V., Borisyak M., Philippov A., Popov S. Simultaneous determination of CKM angle γ and charm mixing parameters // Journal of High Energy Physics. 2021. Article 141. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Gaintseva T., Hushchyn M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Study of B0s → J/ψπ+π−K+K− decays // Journal of High Energy Physics. 2021. Vol. 02. Article 24. doi
- Article The LHCb c., Boldyrev A., Derkach D., Hushchyn M., Karpov M., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Arzymatov K., Belavin V., Borisyak M., Philippov A., Popov S. Updated search for 𝐵+𝑐 decays to two charm mesons // Journal of High Energy Physics. 2021. Article 117. doi
202048
- Article Maxim Borisyak, Artem Ryzhikov, Ustyuzhanin A., Derkach D., Ratnikov F., Mineeva O. (1 + ε)-class Classification: an Anomaly Detection Method for Highly Imbalanced or Incomplete Data Sets // Journal of Machine Learning Research. 2020. Vol. 21. P. 1-22.
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Гайнцева Т. А., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Филиппов А. А., LHCb C. Amplitude analysis of the B+→D+D−K+ decay // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 11. Article 112003. doi
- Article Aaij R., A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Amplitude analysis of the 𝐵+→𝜋+𝜋+𝜋− decay // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 101. No. 1. Article 012006. doi
- Article Derkach D., Kazeev N., Ratnikov F., Ustyuzhanin A., Volokhova A. Cherenkov detectors fast simulation using neural networks // Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2020. Vol. 952. No. 0168-9002. P. 161804. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Hushchyn M., Derkach D., Kazeev N., Maevskiy A., Ratnikov F., Ustyuzhanin A., Chekalina V., Baranov A. Constraints on the K0S→μ+μ− Branching Fraction // Physical Review Letters. 2020. Vol. 125. No. 23. Article 231801. doi
- Article Aaij R., Beteta C. A., Ustyuzhanin A., Borisyak M., Hushchyn M., Derkach D., Kazeev N., Ratnikov F., Ryzhikov A., Maevskiy A., Boldyrev A., Arzymatov K., Belavin V., Popov S. First branching fraction measurement of the suppressed decay Ξ0c→π−Λ+c // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. No. 102. P. 071101. doi
- Article Aaij R., Beteta C. A., K. Arzymatov, V. Belavin, A. Boldyrev, M. Borisyak, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin. First observation of excited Ω−b states // Physical Review Letters. 2020. Vol. 124. No. 8. P. 1-12. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Borisyak M., Derkach D., Гайнцева Т. А., Hushchyn M., Kazeev N., Maevskiy A., Филиппов А. А., Попов С. А., Ratnikov F., Ryzhikov A., Ustyuzhanin A., LHCb C. First observation of the decay Λ0b→ηc(1S)pK− // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 11. Article 112012. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Filippov S., Popov S. First observation of the decay 𝐵0→𝐷0𝐷⎯⎯⎯⎯⎯0𝐾+𝜋− // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 5. Article 051102(R). doi
- Article Ratnikov F. Generative Adversarial Networks for LHCb Fast Simulation // EPJ Web of Conferences. 2020. Vol. 245. P. 2026-2033. doi
- Article Aaij R., Beteta C. A., K. Arzymatov, V. Belavin, A. Boldyrev, M. Borisyak, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin. Isospin amplitudes in Λ0b→J/ψΛ(Σ0) and Ξ0b→J/ψΞ0(Λ) decays // Physical Review Letters. 2020. Vol. 124. No. 11. P. 1-11. doi
- Article A. Boldyrev, D. Derkach, F. Ratnikov, A. Shevelev. ML-assisted versatile approach to Calorimeter R&D // Journal of Instrumentation. 2020. Vol. 15. P. 1-7. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Hushchyn M. Measurement of CP observables in B±→DK± and B±→Dπ± with D→K0SK±π∓ decays // Journal of High Energy Physics. 2020. Vol. 6. P. 58. doi
- Article The LHCb c., A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Measurement of CP violation in B0→ D∗±D∓ decays // Journal of High Energy Physics. 2020. Vol. 03. Article 147. doi
- Article Aaij R., Beteta C. A., Ratnikov F., Ustyuzhanin A., Maevskiy A., Belavin V., Arzymatov K., Hushchyn M., Ryzhikov A., Derkach D., Kazeev N., Boldyrev A., Borisyak M. Measurement of CP-averaged observables in the B0→K∗0μ+μ− decay // Physical Review Letters. 2020. Vol. 125. P. 011802. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ustyuzhanin A., LHCb C. Measurement of the branching fraction of the decay B0s→K0SK0S // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 1. P. 012011. doi
- Article Ahdida C., Ratnikov F., Ustyuzhanin A., Zimmerman J. Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target // The European Physical Journal C - Particles and Fields. 2020. Vol. 80. Article 284 . doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Gaintseva T., Hushchyn M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Measurement of the relative branching fractions of B+→h+h'+h'− decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 11. Article 112010. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Филиппов А. С., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of the shape of the B0s→D∗−sμ+νμ differential decay rate // Journal of High Energy Physics. 2020. Vol. 2020. No. 12. P. 1-31. doi
- Article The LHCb C., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Measurement of the Λ0b→J/ψΛ angular distribution and the Λ0b polarisation in pp collisions // Journal of High Energy Physics. 2020. Vol. 2020. No. 6. Article 110. doi
- Article Aaij R., K. Arzymatov, V. Belavin, A. Boldyrev, M. Borisyak, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin. Measurement of |Vcb| with B0s→Ds(∗)μ+νμ decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 101. No. 7. Article 072004. doi
- Article LHCb C., A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ryzhikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Measurement of Ξ++cc production in pp collisions at √s=13 TeV // Chinese Physics C. 2020. Vol. 44. No. 2. Article 022001. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Measurement of 𝜓(2𝑆) production cross-sections in proton-proton collisions at √𝑠=7 and 13 TeV // The European Physical Journal C - Particles and Fields. 2020. Vol. 80. No. 3. P. 1-23. doi
- Article LHCb C., Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., Arzymatov K., Baranov A., Borisyak M., Chekalina V. Measurement of 𝜓(2𝑆) production cross-sections in proton-proton collisions at 𝑠√ = 7 and 13 TeV // The European Physical Journal C - Particles and Fields. 2020. Vol. 80. No. 3. Article 185. doi
- Article Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Gaintseva T., Hushchyn M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G., LHCb C. Model-Independent Study of Structure in B+→D+D−K+ Decays // Physical Review Letters. 2020. Vol. 125. No. 24. Article 242001. doi
- Article Aaij R., Beteta C. A., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., S. Popov, Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of Enhanced Double Parton Scattering in Proton-Lead Collisions at at √sNN = 8.16 TeV // Physical Review Letters. 2020. Vol. 125. No. 21. P. 1-13. doi
- Article Aaij R., Boldyrev A., Beteta C. A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ustyuzhanin A., Arzymatov K., Баранов А. С., Belavin V., Borisyak M., Chekalina V., LHCb C. Observation of Several Sources of 𝐶𝑃 Violation in 𝐵+→𝜋+𝜋+𝜋− Decays // Physical Review Letters. 2020. Vol. 124. No. 3. P. 031801. doi
- Article The LHCb c., Ratnikov F., Ustyuzhanin A., Maevskiy A., Derkach D., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Kazeev N., Hushchyn M., Ryzhikov A. Observation of a new baryon state in the Λ0bπ+π− mass spectrum // Journal of High Energy Physics. 2020. Vol. 06. Article 136. doi
- Article Aaij R., Ratnikov F., Ustyuzhanin A., Maevskiy A., Boldyrev A., Arzymatov K., Kazeev N., Ryzhikov A., Hushchyn M., Derkach D., Borisyak M., Belavin V. Observation of new Ξ0c baryons decaying to Λ+cK− // Physical Review Letters. 2020. Vol. 124. No. 22. Article 222001. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Observation of structure in the J/ψ-pair mass spectrum // Science Bulletin. 2020. Vol. 65. No. 23. P. 1983-1993. doi
- Article The LHCb C., A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Observation of the semileptonic decay B+→pp¯μ+νμ // Journal of High Energy Physics. 2020. Vol. 03. Article 146. doi
- Article The LHCb c., Ratnikov F., Ustyuzhanin A., Belavin V., Arzymatov K., Maevskiy A., Ryzhikov A., Derkach D., Hushchyn M., Borisyak M., Boldyrev A., Kazeev N. Precision measurement of the B+c meson mass // Journal of High Energy Physics. 2020. Vol. 07. Article 123. doi
- Article Aaij R., Beteta C. A., A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Precision measurement of the 𝛯++𝑐𝑐 mass // Journal of High Energy Physics. 2020. Vol. 02. No. 049. P. 1-17. doi
- Article Aaij R., Beteta C. A., Borisyak M., Derkach D., Maevskiy A., Kazeev N., Ustyuzhanin A., Hushchyn M., Boldyrev A., Ratnikov F., Arzymatov K., Baranov A., Belavin V., Chekalina V., LHCb c. Search for A′→μ+μ− decays // Physical Review Letters. 2020. Vol. 124. No. 4. P. 1-12. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ustyuzhanin A., LHCb C. Search for CP violation and observation of P violation in Λ0b→pπ−π+π− decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 5. P. 051101. doi
- Article Aaij R., Arzymatov K., Baranov A., Belavin V., Borisyak M., Ratnikov F., Ustyuzhanin A., Boldyrev A., Derkach D., Ryzhikov A., Hushchyn M., Kazeev N., Maevskiy A. Search for CP violation in Ξ+c→pK−π+ decays using model-independent techniques // The European Physical Journal C - Particles and Fields. 2020. Vol. 80. Article 986. doi
- Article LHCb C., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ustyuzhanin A. Search for the doubly charmed baryon Ξ cc // Science China Physics, Mechanics & Astronomy. 2020. Vol. 63. No. 2. Article 221062. doi
- Article Aaij R., Beteta C. A., A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ryzhikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak, S. Popov. Search for the doubly heavy Ξ0𝑏𝑐 baryon via decays to D0pK− // Journal of High Energy Physics. 2020. Vol. 11. No. 095. P. 1-20. doi
- Article Aaij R., Beteta C. A., K. Arzymatov, V. Belavin, A. Boldyrev, M. Borisyak, D. Derkach, Hushchyn M., N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ryzhikov, A. Ustyuzhanin. Search for the lepton flavour violating decay B+→K+μ−τ+ using B∗0s2 decays // Journal of High Energy Physics. 2020. Vol. 06. No. 129. P. 1-18. doi
- Article Aaij R., Beteta C. A., Ratnikov F., Ustyuzhanin A., Arzymatov K., Maevskiy A., Belavin V., Hushchyn M., Ryzhikov A., Kazeev N., Borisyak M., Boldyrev A., Derkach D. Search for the rare decays B0s→e+e− and B0→e+e− // Physical Review Letters. 2020. Vol. 124. P. 211802. doi
- Article The LHCb c., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Arzymatov K., Belavin V., Borisyak M., Philippov A., Popov S. Searches for low-mass dimuon resonances // Journal of High Energy Physics. 2020. Vol. 10. Article 156. doi
- Article LHCb C., Aaij R., Arzymatov K., Belavin V., Boldyrev A., Borisyak M., Derkach D., Gaintseva T., Hushchyn M., Kazeev N., Maevskiy A., Philippov A., Popov S., Ratnikov F., Ryzhikov A., Ustyuzhanin A., Zunica G. Strong constraints on the b → sγ photon polarisation from B0 → K∗0e+e− decays // Journal of High Energy Physics. 2020. Vol. 12. Article 81. doi
- Article Aaij R., Beteta C. A., Borisyak M., Derkach D., Belavin V., Arzymatov K., Hushchyn M., Ratnikov F., Kazeev N., Курбатов Е. О., Ustyuzhanin A., Boldyrev A., Ryzhikov A., Maevskiy A., Popov S., LHCb c. Study of the lineshape of the χc1(3872) state // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 102. No. 9. Article 092005. doi
- Article Aaij R., Beteta C. A., Boldyrev A., Derkach D., Hushchyn M., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Ustyuzhanin A. Study of the ψ2(3823) and χc1(3872) states in B+→(J/ψπ+π−)K+ decays // Journal of High Energy Physics. 2020. Vol. 2020. No. 8. Article 123. doi
- Article The LHCb C., K. Arzymatov, V. Belavin, A. Boldyrev, M. Borisyak, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin. Test of lepton universality with Λ0b→pK−ℓ+ℓ− decays // Journal of High Energy Physics. 2020. Vol. 05. Article 140. doi
- Article Ahdida C., Albanese R., Alexandrov A., Ratnikov F., Zaytsev Y. The magnet of the scattering and neutrino detector for the SHiP experiment at CERN // Journal of Instrumentation. 2020. Vol. 15. Article P01027. doi
- Article Aaij R., Beteta C. A., Borisyak M., Derkach D., Hushchyn M., Ustyuzhanin A., Chekalina V., Boldyrev A., Arzymatov K., Belavin V., Kazeev N., Maevskiy A., Ratnikov F., Ryzhikov A., Baranov A., LHCb c. Updated measurement of decay-time-dependent CP asymmetries in D0→K+K− and D0→π+π− decays // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2020. Vol. 101. No. 1. P. 1-12. doi
- Article Ratnikov F. Using Machine Learning to Speed Up and Improve Calorimeter R \& D // Journal of Instrumentation. 2020. Vol. 15. No. 5. Article 05032. doi
201927
- Article Hushchyn M., Derkach D., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. A search for Ξ++cc→ D+pK−π+ decays // Journal of High Energy Physics. 2019. Vol. 124. P. 1-20. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Amplitude Analysis of B±→π±K+K− Decays // Physical Review Letters. 2019. Vol. 123. No. 23. P. 231802. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A. Amplitude analysis of B s0 → K S0K±π∓ decays // Journal of High Energy Physics. 2019. Vol. 6. P. 1-27. doi
- Article Kazeev N., Derkach D., Ratnikov F., Ustyuzhanin A., Volokhova A. Cherenkov detectors fast simulation using neural networks // Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2019 doi
- Article Ratnikov F., Zakharov E. Fast calorimeter simulation in LHCb // Proceedings of Science Italy. 2019. Vol. 340. P. 1-3. doi
- Article Ahdida C., Ratnikov F., Zaytsev Y. Fast simulation of muons produced at the SHiP experiment using Generative Adversarial Networks // Journal of Instrumentation. 2019. Vol. 14. Article P11028. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A. First Observation of the Radiative Decay Λ0b → Λγ // Physical Review Letters. 2019. Vol. 123. No. 3. P. 1-11. doi
- Article Ratnikov F., Ustyuzhanin A. Generative Models for Fast Calorimeter Simulation // EPJ Web of Conferences. 2019. Vol. 2014. P. 1-8. doi
- Article A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, V. Belavin, M. Borisyak, K. Arzymatov. Measurement of CP observables in the process B0 → DK*0 with two- and four-body D decays // Journal of High Energy Physics. 2019. No. 08(2019)041. P. 1-29. doi
- Article A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Measurement of CP violation in the Bs0→ϕϕ decay and search for the B 0 → ϕϕ decay // Journal of High Energy Physics. 2019. No. 12. P. 155. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Measurement of CP-Violating and Mixing-Induced Observables in B0s→ϕγ Decays // Physical Review Letters. 2019. Vol. 123. No. 8. P. 081802-1-081802-10. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Measurement of Charged Hadron Production in Z-Tagged Jets in Proton-Proton Collisions at √s=8 TeV // Physical Review Letters. 2019. Vol. 123. No. 23. P. 232001. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Measurement of b hadron fractions in 13 TeV pp collisions // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2019. Vol. 100. No. 3. P. 031102-1-031102-11. doi
- Article A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Measurement of the B−c meson production fraction and asymmetry in 7 and 13 TeV pp collisions // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2019. Vol. 100. No. 11. P. 112006-1-112006-17. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Measurement of the CP-violating phase ϕs from Bs0→ J/ψπ+ π− decays in 13 TeV pp collisions // Physics Letters B. 2019. Vol. 797. P. 134789. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Arzymatov K., Borisyak M., Chekalina V., Ustyuzhanin A. Measurement of the Charm-Mixing Parameter yCP // Physical Review Letters. 2019. Vol. 122. No. 1. P. 1-10. doi
- Article Boldyrev A., Derkach D., Hushchyn M., Maevskiy A., Ratnikov F., Ustyuzhanin A., Kazeev N., LHCb C. Measurement of the electron reconstruction efficiency at LHCb // Journal of Instrumentation. 2019. Vol. 14. No. 11. P. 11023. doi
- Article A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, V. Belavin, M. Borisyak, K. Arzymatov. Observation of New Resonances in the Λb0 π+π- System // Physical Review Letters. 2019. Vol. 123. No. 15. P. 1-11. doi
- Article Ustyuzhanin A., Ratnikov F., Borisyak M., Arzymatov K., Belavin V., Derkach D., Hushchyn M., Kazeev N. Observation of a narrow pentaquark state, Pc(4312)+, and of two-peak structure of the Pc(4450)+ // Physical Review Letters. 2019. Vol. 122. No. 22. P. 222001-1-222001-11. doi
- Article Maevskiy, A., Boldyrev, A, Derkach, D., Hushchyn, M., Kazeev, N., Ratnikov, F., Ustyuzhanin, A., Belavin, V., Borisyak, M., K. Arzymatov. Observation of the Λb0→χc1 (3872) pK− decay // Journal of High Energy Physics. 2019. No. 09(2019)28. P. 1-19. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Precision measurement of the Λ+c, Ξ+c, and Ξ0c baryon lifetimes // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2019. Vol. 100. No. 3. P. 032001-1-032001-12. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., Borisyak M., Arzymatov K., Chekalina V. Search for CP violation through an amplitude analysis of D0 → K+K−π+π− decays // Journal of High Energy Physics. 2019. Vol. 2019. No. 2. P. 1-33. doi
- Article A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, K. Arzymatov, V. Belavin, M. Borisyak. Search for Lepton-Flavor Violating Decays B+→K+μ±e∓ // Physical Review Letters. 2019. Vol. 123. No. 24. P. 1-11. doi
- Article Derkach D., Hushchyn M., Kazeev N., Ratnikov F., Ustyuzhanin A., LHCb C. Search for the Lepton-Flavor-Violating DecaysB0s→τμ∓andB0→τμ // Physical Review Letters. 2019. Vol. 123. No. 21. P. 211801-1-211801-11. doi
- Article Ratnikov F., Hushchyn M., Курбатов Е. О., Ustyuzhanin A. Sensitivity of the SHiP experiment to Heavy Neutral Leptons // Journal of High Energy Physics. 2019. Vol. 1904. No. 77. P. 1-16. doi
- Article Ahdida C., Ratnikov F., Ustyuzhanin A., Kurbatov E., Hushchyn M., Zaytsev Y. The experimental facility for the Search for Hidden Particles at the CERN SPS // Journal of Instrumentation. 2019. Vol. 14. No. 3. Article P03025. doi
- Article A. Boldyrev, D. Derkach, M. Hushchyn, N. Kazeev, A. Maevskiy, F. Ratnikov, A. Ustyuzhanin, V. Belavin, M. Borisyak, K. Arzymatov. Updated measurement of time-dependent 𝐶𝑃-violating observables in 𝐵0𝑠→𝐽/𝜓𝐾+𝐾− decays // The European Physical Journal C - Particles and Fields. 2019. No. 79:706. P. 1-26. doi
201811
- Article Azzolini V., Borisyak M., Cerminara G., Derkach D., Franzoni G., De Guio F., Koval O., Pierini M., Pol A. A., Ratnikov F., Siroky F., Ustyuzhanin A., Vlimant J. Deep learning for inferring cause of data anomalies // Journal of Physics: Conference Series. 2018. Vol. 1085. No. 042015. P. 1-6. doi
- Article Ratnikov F., Баранов А. С., Borisyak M., Derkach D., Hushchyn M., Kazeev N., Ustyuzhanin A. First measurement of the CP-violating phase ϕdds in B s 0 → (K+π−)(K−π+) decays // Journal of High Energy Physics. 2018. Vol. 2018. P. 1-31. doi
- Article Ratnikov F., Viktoria Chekalina. Machine Learning approach to γ/π0 separation in the LHCb calorimeter // Journal of Physics: Conference Series. 2018. Vol. 1085. P. 1-5. doi
- Article Derkach D., Hushchyn M., Likhomanenko T., Rogozhnikov A., Kazeev N., Chekalina V., Нейчев Р. Г., Stanislav K., Ratnikov F. Machine-Learning-based global particle-identification algorithms at the LHCb experiment // Journal of Physics: Conference Series. 2018. Vol. 1085. No. 4. P. 1-5. doi
- Article Ratnikov F. Measurement of Antiproton Production in pHe Collisions at 𝑠𝑁𝑁‾‾‾‾√=110 GeV // Physical Review Letters. 2018. Vol. 121. No. 22. P. 222001-1-222001-10. doi
- Article Hushchyn M., Derkach D., Ustyuzhanin A., Ratnikov F., Баранов А. С., Borisyak M. Measurement of CP observables in B± → D(⁎)K± and B± → D(⁎)π± decays // Physics Letters B. 2018. Vol. 777. P. 16-30. doi
- Article Ratnikov F. Observation of the decay 𝐵⎯⎯⎯⎯0𝑠→𝜒𝑐2𝐾+𝐾− in the ϕ mass region // Journal of High Energy Physics. 2018. Vol. 1808. P. 1-19. doi
- Article Ratnikov F. Search for lepton-flavour-violating decays of Higgs-like bosons // The European Physical Journal C - Particles and Fields. 2018. Vol. 78. No. 12. P. 1-12. doi
- Article Kazeev N., Derkach D., Hushchyn M., Ratnikov F., Ustyuzhanin A. Search for the rare decay Λ c+→ p μ+ μ− // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2018. Vol. 97. P. 091101-1-091101-10. doi
- Article Ustyuzhanin A., Derkach D., Borisyak M., Баранов А. С., Hushchyn M., Kazeev N., Ratnikov F. Search for weakly decaying bb-flavored pentaquarks // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2018. Vol. 97. P. 032010-1-032010-11. doi
- Article Ratnikov F. Study of Υ production in 𝑝Pb collisions at 𝑠𝑁𝑁‾‾‾‾√=8.16 TeV // Journal of High Energy Physics. 2018. Vol. 1811. P. 1-35. doi
201713
- Article M. Borisyak, Derkach D., Ratnikov F., Ustyuzhanin A., LHCb c. Improved limit on the branching fraction of the rare decay K0S→μ+μ− // The European Physical Journal C - Particles and Fields. 2017. Vol. 10. No. C77. P. 678-690. doi
- Article Ratnikov F., Panin A., Chekalina V. Machine Learning Photons Separation in the LHCb Calorimeter // Journal of Physics: Conference Series. 2017 (in press)
- Article Ratnikov F., Ustyuzhanin A., Derkach D., Borisyak M. Measurement of CP asymmetries in D± → η′π± and Ds± → η′π± decays // Physics Letters B. 2017. Vol. 771. P. 21-30. doi
- Article Hushchyn M., Ustyuzhanin A., Derkach D., Ratnikov F., Баранов А. С., Kazeev N., Borisyak M. Measurement of CP asymmetry in D0→ K− K+ decays // Physics Letters B. 2017. Vol. 767. P. 177-187. doi (in press)
- Article Borisyak M., Ustyuzhanin A., Ratnikov F., Баранов А. С., Hushchyn M. Measurement of the B0s→μ+μ−Bs0→μ+μ− branching fraction and effective lifetime and search for B0→μ+μ−B0→μ+μ− decays // Physical Review Letters. 2017. Vol. 118. No. 19. P. 191801-1-191801-11. doi
- Article Ratnikov, Derkach, Borisyak, Ustyuzhanin A. Observation of Bc+ → D0K+ decays // Physical Review Letters. 2017. Vol. 118. No. 11. P. 111803-1-111803-9. doi
- Article LHCb C., Borisyak M., Derkach D., N. Kazeev, Rogozhnikov A., Ratnikov F., Ustyuzhanin A. Observation of the doubly charmed baryon Ξ++cc // Physical Review Letters. 2017. Vol. 119. No. 11. P. 1-10. doi
- Article Баранов А. С., Burnaev E., Derkach D., Filatov A., Klyuchnikov N., Lantwin O., Ratnikov F., Ustyuzhanin A., Zaitsev A. Optimising the Active Muon Shield for the SHiP Experiment at CERN // Journal of Physics: Conference Series. 2017. Vol. 934. P. 1-5. doi
- Article LHCb C., Derkach D., Kazeev N., Ratnikov F., Rogozhnikov A., Ustyuzhanin A. Search for Baryon-Number Violating Ξ b 0 Oscillations // Physical Review Letters. 2017. Vol. 119. No. 18. P. 181807-1-181807-9. doi
- Article Borisyak M., Ratnikov F., Ustyuzhanin A. Search for the decays B0s→τ+τ−Bs0→τ+τ− and B0→τ+τ− // Physical Review Letters. 2017. Vol. 118. No. 25. P. 251802-251812. doi
- Article Borisyak M., Derkach D., Ustyuzhanin A., Ratnikov F., LHCb c. Study of charmonium production in b-hadron decays and first evidence for the decay B0s→ϕϕϕ // The European Physical Journal C - Particles and Fields. 2017. Vol. 77. No. 9. P. 609-626. doi
- Article Ustyuzhanin A., Баранов А. С., Ratnikov F., Hushchyn M., Herwijnen E. v. The active muon shield in the SHiP experiment // Journal of Instrumentation. 2017. Vol. 12. No. 5. P. 1-8. doi
- Article Borisyak M., Ratnikov F., Derkach D., Ustyuzhanin A. Towards automation of data quality system for CERN CMS experiment // Journal of Physics: Conference Series. 2017. Vol. 898. No. 9. P. 1-6. doi
201621
- Article Khachatryan V., Ratnikov F. Evidence for exclusive γγ → W+W− production and constraints on anomalous quartic gauge couplings in pp collisions at s√=7s=7 and 8 TeV p s = 7 and 8 TeV" // Journal of High Energy Physics. 2016. Vol. 1608. P. 119. doi
- Article Khachatryan V., Ratnikov F. Measurement of dijet azimuthal decorrelation in pp collisions at √s=8TeV // The European Physical Journal C - Particles and Fields. 2016. Vol. 76. No. 10. P. 536. doi
- Article Khachatryan V., Ratnikov F. Measurement of the Zgamma->nunugamma production cross section in pp collisions at sqrt(s) = 8 NeV and limits on anomalous ZZγ and Zγγ trilinear gauge boson couplings // Physics Letters B. 2016. Vol. 760. P. 448-468. doi
- Article Khachatryan V., Ratnikov F. Measurement of the differential cross section and charge asymmetry for inclusive pp→W±+X production at s√=8 TeV // The European Physical Journal C - Particles and Fields. 2016. Vol. 76. No. 8. P. 469. doi
- Article Khachatryan V., Ratnikov F. Measurement of the differential cross sections for top quark pair production as a function of kinematic event variables in pp collisions at s√=7 and 8 TeV // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2016. Vol. 94. No. 5. P. 052006. doi
- Article Khachatryan V., Ratnikov F. Measurement of the integrated and differential tt¯ production cross sections for high-pT top quarks in pp collisions at s√=8 TeV // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2016 doi
- Article Khachatryan V., Ratnikov F. Measurement of the t-tbar production cross section in the e-mu channel in proton-proton collisions at sqrt(s) = 7 and 8 TeV // Journal of High Energy Physics. 2016. No. 2016:29 doi
- Article Khachatryan V., Ratnikov F. Measurement of the top quark mass using charged particles in pp collisions at s√=8 TeV // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2016. No. 9 doi
- Article Khachatryan V., Ratnikov F. Measurements of t p t charge asymmetry using dilepton nal states in pp collisions at s = 8 TeV // Physics Letters B. 2016. No. 760. P. 365-386. doi
- Article Khachatryan V., Ratnikov F., Sirunyan A. M. Search for Higgs boson off-shell production in proton-proton collisions at 7 and 8 TeV and derivation of constraints on its total decay width // Journal of High Energy Physics. 2016 doi
- Article Khachatryan V., Ratnikov F. Search for direct pair production of supersymmetric top quarks decaying to all-hadronic final states in pp collisions at √s=8TeV // The European Physical Journal C - Particles and Fields. 2016. Vol. 76:460 doi
- Article Khachatryan V., Ratnikov F. Search for heavy Majorana neutrinos in e±e±+ jets and e±μ±+ jets events in proton-proton collisions at s√=8s=8 TeV // Journal of High Energy Physics. 2016. No. 2016:169 doi
- Article Khachatryan V., Ratnikov F. Search for heavy resonances decaying to two Higgs bosons in final states containing four b quarks // The European Physical Journal C - Particles and Fields. 2016. Vol. 76. No. 371 doi
- Article Khachatryan V., Ratnikov F. Search for lepton avour violating decays of heavy resonances and quantum black holesto an e pair in proton-proton collisions at ps = 8 TeV // The European Physical Journal C - Particles and Fields. 2016 doi
- Article Khachatryan V., Sirunyan A., Tumasyan A., Ratnikov F. Search for lepton avour violating decays of the Higgs boson to e tau and e mu in proton-proton collisions at sqrt(s)=8 TeV // Modern Physics Letters B. 2016 doi (in press)
- Article Khachatryan V., Ratnikov F. Search for neutral resonances decaying into a Z boson and a pair of b jets or τ leptons // Physics Letters B. 2016. Vol. 759. P. 369-394. doi
- Article Ratnikov F. Search for new phenomena in monophoton final states in proton-proton collisions at s√=s= 8 TeV // Physics Letters B. 2016. Vol. 755. P. 102-124. doi
- Article Khachatryan V., Ratnikov F. Search for s channel single top quark production in pp collisions at ps = 7 and 8 TeV // Journal of High Energy Physics. 2016. No. 2016:27 doi
- Article Khachatryan V., Ratnikov F. Search for supersymmetry in electroweak production with photons and large missing transverse energy in pp collisions at sqrt(s) = 8 TeV // Physics Letters B. 2016. Vol. 759. P. 479-500. doi
- Article Khachatryan V., Ratnikov F. Search for two Higgs bosons in final states containing two photons and two bottom quarks in proton-proton collisions at 8 TeV // Physical Review D - Particles, Fields, Gravitation and Cosmology. 2016. No. 5 doi
- Article Khachatryan V., Ratnikov F. ϒ(nS) polarizations versus particle multiplicity in pp collisions at ps = 7 TeV // Physics Letters B. 2016. Vol. 761. P. 31-52.
20154
- Article Ratnikov F. Combined Measurement of the Higgs Boson Mass in pppp Collisions at s√=7s=7 and 8 TeV with the ATLAS and CMS Experiments // Physical Review Letters. 2015. Vol. 114. P. 191803. doi
- Article Ratnikov F., Derkach D., Ustyuzhanin A., Likhomanenko T. Observation of the rare B0s→μ+μ−Bs0→μ+μ− decay from the combined analysis of CMS and LHCb data // Nature. 2015. Vol. 522. P. 68-72. doi
- Article Ratnikov F. Precise determination of the mass of the Higgs boson and tests of compatibility of its couplings with the standard model predictions using proton collisions at 7 and 8 TeV // The European Physical Journal C - Particles and Fields. 2015. Vol. 75. No. 5. P. 212. doi
- Article Ratnikov F. Search for dark matter, extra dimensions, and unparticles in monojet events in proton–proton collisions at s√=8s=8 TeV // The European Physical Journal C - Particles and Fields. 2015. Vol. 75. No. 5. P. 235. doi
20142
- Article Ratnikov F. Observation of the diphoton decay of the Higgs boson and measurement of its properties // The European Physical Journal C - Particles and Fields. 2014. Vol. 74. No. 10. P. 3076. doi
- Article Ratnikov F. Searches for electroweak production of charginos, neutralinos, and sleptons decaying to leptons and W, Z, and Higgs bosons in pp collisions at 8 TeV, CMS collaboration // The European Physical Journal C - Particles and Fields. 2014. Vol. 74. No. 9. P. 3036. doi
Employment history
Professional Experience:
2016-Current Senior Researcher, High School of Economics, Moscow, Russia
2014-2015 Senior Research Associate, Nebraska Un
iversity at Lincoln, USA.
•
Integrate work of 20+ people developing simulation
and reconstruction
software for CMS detector upgrade in 2023
Fedor.Ratnikov@cern.ch
2
•
Development and support of the software for the Cal
orimeter Upgrade
project and event mixing
2008-2014 Scientist, Institute of Experimental Nucl
ear Physics (IEKP) in
Karlsruhe Institute of Technology, Germany.
•
Discovered the Higgs boson using CMS detector at LH
C (~1:10
13
signal to
background ratio)
•
Searched for new physics using CMS detector at LHC
(~1:10
14
signal to
background ratio)
•
Supervised statistical analysis and interpretation
of results in the
collaboration
•
Created a friendly physics analysis environment and
efficient use of
national computing resources by German CMS communi
ty
2005-2008 Research Associate, University of Marylan
d, USA.
•
Lead CMS jet reconstruction software development an
d validation efforts.
•
Completed full software development cycle for handl
ing calibrations for
CMS Hadron calorimeter.
1999-2005 Research Associate, Rutgers, the State Un
iversity of New Jersey, USA.
•
Developed and operated the CDF Data Handling system
managing
Petabytes of data.
•
Established complete software cycle of developing f
lexible interface to
different data handling and storage systems for the
Physics Analysis
Framework.
1994-1999 Guest Scientist, Deutsches Elektronen-Syn
chrotron (DESY), Germany.
•
Developed trigger physics simulation and real-time
emulation packages.
•
Optimized trigger system design and overall detecto
r physics performance
for the HERA-B detector at DESY
•
Coordinated software development of the group of fi
ve people
1989-1994 Scientist, Institute of Theoretical and E
xperimental Physics, Russia .
•
Developed algorithm for internal self calibration o
f the muon detector of the
GEM experiment
•
Created system for real-time readout of the CAMAC c
rates
1986-1989 Student in Institute of Theoretical and E
xperimental Physics, Russia.
•
Created physics and detector simulation of 3-meter
magnetic spectrometer
installation.
Professional Experience:
2016-Current Senior Researcher, High School of Economics, Moscow, Russia
2014-2015 Senior Research Associate, Nebraska Un
iversity at Lincoln, USA.
•
Integrate work of 20+ people developing simulation
and reconstruction
software for CMS detector upgrade in 2023
Fedor.Ratnikov@cern.ch
2
•
Development and support of the software for the Cal
orimeter Upgrade
project and event mixing
2008-2014 Scientist, Institute of Experimental Nucl
ear Physics (IEKP) in
Karlsruhe Institute of Technology, Germany.
•
Discovered the Higgs boson using CMS detector at LH
C (~1:10
13
signal to
background ratio)
•
Searched for new physics using CMS detector at LHC
(~1:10
14
signal to
background ratio)
•
Supervised statistical analysis and interpretation
of results in the
collaboration
•
Created a friendly physics analysis environment and
efficient use of
national computing resources by German CMS communi
ty
2005-2008 Research Associate, University of Marylan
d, USA.
•
Lead CMS jet reconstruction software development an
d validation efforts.
•
Completed full software development cycle for handl
ing calibrations for
CMS Hadron calorimeter.
1999-2005 Research Associate, Rutgers, the State Un
iversity of New Jersey, USA.
•
Developed and operated the CDF Data Handling system
managing
Petabytes of data.
•
Established complete software cycle of developing f
lexible interface to
different data handling and storage systems for the
Physics Analysis
Framework.
1994-1999 Guest Scientist, Deutsches Elektronen-Syn
chrotron (DESY), Germany.
•
Developed trigger physics simulation and real-time
emulation packages.
•
Optimized trigger system design and overall detecto
r physics performance
for the HERA-B detector at DESY
•
Coordinated software development of the group of fi
ve people
1989-1994 Scientist, Institute of Theoretical and E
xperimental Physics, Russia .
•
Developed algorithm for internal self calibration o
f the muon detector of the
GEM experiment
•
Created system for real-time readout of the CAMAC c
rates
1986-1989 Student in Institute of Theoretical and E
xperimental Physics, Russia.
•
Created physics and detector simulation of 3-meter
magnetic spectrometer
installation.
HSE University among Founders of Super C-Tau Factory
Ten universities and institutes have announced a partnership to construct an electron-positron collider in order to study the production and properties of charmed particles and tau leptons. The new experiment will be part of the Super C-Tau Factory project. It was founded by two international teams and eight from Russia, including HSE University.
Large Hadron Collider: New Hadron Discovery Factory
LHCb, a collaboration of one of Large Hadron Collider experiments, including a team of HSE University researchers, has published a news piece about the discovery of new tetraquarks, which are exotic hadrons consisting of four quarks. This discovery was made possible thanks to massive data samples gathered by the LHCb experiment with the use of algorithms developed at HSE University.
Charmed, Doubly Strange
Algorithm devised by HSE University and Yandex helped catch new particle at the Large Hadron Collider
Leading Researcher at the HSE Faculty of Computer Science Coordinates New Experiment at CERN
Fedor Ratnikov, a leading researcher at the Laboratory of Methods for Big Data Analysis (LAMBDA), has been appointed project coordinator in the SHiP collaboration. He will be responsible for developing and designing the detector’s active magnetic radiation shielding.
HSE Becomes LHCb Associate Member at CERN
The Higher School of Economics has joined the LHCb collaboration at the Large Hadron Collider, which is operated by the European Organization for Nuclear Research. The group from HSE will consist of researchers from the Laboratory of Methods for Big Data Analysis (LAMBDA). This will give HSE researchers full access to data from the collaboration and allow the university to participate in various projects.
Masterclasses Introduce High School Students to Particle Physics
National Research University Higher School of Economics hosted a masterclass in particle physics on March 27 and brought high school students to participate. These students took a day off from school to go to the University and dive into the actual data. Scientists of the HSE Laboratory of Methods for Big Data Analysis (LAMBDA) Denis Derkach and Fedor Ratnikov introduced them to the tiniest building blocks of the universe and to the accelerators and detectors which probe these mysterious particles.
CERN Workshop at the HSE Faculty of Computer Science
Thirty school students from Moscow and the Moscow Region recently had an opportunity to meet international researchers and analyze data obtained from the Large Hadron Collider at a workshop organized by HSE’s Faculty of Computer Science, Yandex and CERN.