Бочарников Владимир Олегович
Факультет компьютерных наук
Профессиональные интересы
Должности
- Младший научный сотрудник — Факультет компьютерных наук, Институт искусственного интеллекта и цифровых наук, Научно-учебная лаборатория методов анализа больших данных
- Преподаватель — Факультет физики
Био
- · Начал работать в НИУ ВШЭ в 2023 году.
- · Научно-педагогический стаж: 3 года.
Образование
- 2021 · Аспирантура: Национальный исследовательский ядерный университет "МИФИ", специальность «Физика и астрономия»
- 2017 · Магистратура: Национальный исследовательский ядерный университет "МИФИ", специальность «Ядерные физика и технологии», квалификация «Магистр»
- 2015 · Бакалавриат: Национальный исследовательский ядерный университет "МИФИ", специальность «Ядерные физика и технологии», квалификация «Бакалавр»
Опыт работы
- · 2017-2020: : ФИАН, лаборатория тяжелых кварков и лептонов — инженер
- · 2018-2022: : Deutsches Elektronen-Synchrotron (DESY), группа FTX, Гамбург, Германия — научный сотрудник
Награды и поощрения
- · Благодарность старшего директора по научным исследованиям и разработкам НИУ ВШЭ (август 2024)
- · Надбавка за публикацию в журнале из Списка А (и приравненном к нему научном издании) (2025–2026, 2024–2025)
- · Группа высокого профессионального потенциала (кадровый резерв НИУ ВШЭ)Категория "Новые исследователи" (2024–2025)
Гранты и проекты
- — · Факультет компьютерных наук НИУ ВШЭ, Сколтех и Физический институт им. П. Н. Лебедева РАН провели Московскую международную школу физики 2024
Идентификаторы исследователя
- ORCID:
0000-0003-1048-7732 - ResearcherID:
D-2065-2016 - Google Scholar: https://scholar.google.com/citations?view_op=list_works&hl=en&user=mLvyIOwAAAAJ
- Scopus AuthorID:
57208795255
Публикации (100)
Measurement of the ψ(2S) to J/ψ cross-section ratio as a function of centrality in PbPb collisions at sqrt(s) = 5.02 TeV
2025 · ARTICLE · en
The ratio of prompt production cross-sections of ψ(2S) and J/ψ mesons in their dimuon final state is measured as a function of centrality, using data collected by the LHCb detector in PbPb collisions at = 5.02 TeV, for the first time in the forward rapidity region. The measured ratio shows no dependence on the collision centrality, and is compared to the latest theory predictions and to the recent measurements in literature.
Study of Ds1(2460)+→D+sπ+π− in B→D¯(∗)D+sπ+π− decays
2025 · ARTICLE · en
An amplitude analysis of the Ds1(2460)+→D+sπ+π− transition is performed simultaneously in B0→D−D+sπ+π−, B+→D¯0D+sπ+π−, and B0→D∗−D+sπ+π− decays. The study is based on a data sample of proton-proton collisions recorded with the LHCb detector at centre-of-mass energies of s√=7,8, and 13TeV, corresponding to a total integrated luminosity of 9fb−1. A clear double-peak structure is observed in the m(π+π−) spectrum of the Ds1(2460)+→D+sπ+π− decay. The data can be described either with a model including f0(500), f0(980) and f2(1270) resonances, in which the contributions of f0(980) and f2(1270) are unexpectedly large, or with a model including f0(500), a doubly charged open-charm tetraquark state T++cs¯ and its isospin partner T0cs¯. If the former is considered implausible, the Tcs¯ states are observed with high significance, and the data are consistent with isospin symmetry. When imposing isospin constraints between the two Tcs¯ states, their mass and width are determined to be 2327±13±13MeV and 96±16+170−23MeV, respectively, where the first uncertainty is statistical and the second is systematic. The mass is slightly below the DK threshold, and a spin-parity of 0+ is favoured with high significance.
Measurement of the CKM angle γ in B± → DK*(892)± decays
2025 · ARTICLE · en
Measurements of CP observables and the CKM angle γ are performed in B± → DK*(892)± decays, where D represents a superposition of D0 and states, using the LHCb dataset collected during Run 1 (2011–2012) and Run 2 (2015–2018). A study of this channel is presented with the D meson reconstructed in two-body final states K±π∓, K+K− and π+π−; four-body final states K±π∓π±π∓ and π+π−π+π−; and three-body final states and . This analysis includes the first observation of the suppressed B± → [π±K∓]DK*± and B± → [π±K∓π±π∓]DK*± decays. The combined result gives γ = (63 ± 13)°
Measurements of ψ(2S) and χc1(3872) production within fully reconstructed jets
2025 · ARTICLE · en
This paper presents the first measurement of ψ(2S) and χc1(3872) meson production within fully reconstructed jets. Each quarkonium state (tag) is reconstructed via its decay to the J/ψ(→μ+μ−)π+π− final state in the forward region using proton-proton collision data collected by the LHCb experiment at the center-of-mass-energy of 13TeV in 2016, corresponding to an integrated luminosity of 1.64fb−1. The fragmentation function, presented as the ratio of the quarkonium-tag transverse momentum to the full jet transverse momentum (pT(tag)/pT(jet)), is measured differentially in pT(jet) and pT(tag) bins. The distributions are separated into promptly produced quarkonia from proton-proton collisions and quarkonia produced from displaced b-hadron decays. While the displaced quarkonia fragmentation functions are in general well described by parton-shower predictions, the prompt quarkonium distributions differ significantly from fixed-order non-relativistic QCD (NRQCD) predictions followed by a QCD parton shower.
Test of Lepton Flavor Universality with 𝐵0𝑠 →𝜙ℓ+ℓ− Decays
2025 · ARTICLE · en
Lepton flavor universality in rare 𝑏 →𝑠 transitions is tested for the first time using 𝐵0𝑠 meson decays. The measurements are performed using 𝑝𝑝 collision data collected by the LHCb experiment between 2011 and 2018, corresponding to a total integrated luminosity of 9 fb−1. Branching fraction ratios between the 𝐵0𝑠→𝜙𝑒+𝑒− and 𝐵0𝑠 →𝜙𝜇+𝜇− decays are measured in three regions of dilepton mass squared, 𝑞2, with 0.1
Search for B∗0(s)→μ+μ− in B+c→π+μ+μ− decays
2025 · ARTICLE · en
A search for the very rare B∗0→μ+μ− and B∗0s→μ+μ− decays is conducted by analysing the B+c→π+μ+μ− process. The analysis uses proton-proton collision data collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9\,fb−1. The signal signatures correspond to simultaneous peaks in the μ+μ− and π+μ+μ− invariant masses. No evidence for an excess of events over background is observed for either signal decay mode. Upper limits at the 90% confidence level are set on the branching fractions relative to that for B+c→J/ψπ+ decays, B∗0(μ+μ−)π+/J/ψπ+
First Determination of the Spin-Parity of Ξ𝑐(3055)+,0 Baryons
2025 · ARTICLE · en
The Ξ0(−)𝑏→Ξ𝑐(3055)+(0)(→𝐷+(0)Λ)𝜋− decay chains are observed, and the spin-parity of Ξ𝑐(3055)+(0) baryons is determined for the first time. The measurement is performed using proton-proton collision data at a center-of-mass energy of √𝑠 =13 TeV, corresponding to an integrated luminosity of 5.4 fb−1, recorded by the LHCb experiment between 2016 and 2018. The spin-parity of the Ξ𝑐(3055)+(0) baryons is determined to be 3/2+ with a significance of more than 6.5𝜎 (3.5𝜎) compared to all other tested hypotheses. The up-down asymmetries of the Ξ0(−)𝑏→Ξ𝑐(3055)+(0)𝜋− transitions are measured to be −0.92±0.10±0.05 (−0.92±0.16±0.22), consistent with maximal parity violation, where the first uncertainty is statistical and the second is systematic. These results support the hypothesis that the Ξ𝑐(3055)+(0) baryons correspond to the first 𝐷-wave 𝜆-mode excitation of the Ξ𝑐 flavor triplet.
Measurement of exclusive J / ψ and ψ ( 2 S ) production at √ s = 13 TeV
2025 · ARTICLE · en
Measurements are presented of the cross-section for the central exclusive production of J/ψ→μ+μ− and ψ(2S)→μ+μ− processes in proton-proton collisions at √s=13 TeV with 2016–2018 data. They are performed by requiring both muons to be in the LHCb acceptance (with pseudorapidity 2
Measurement of CP violation in B0→D+D− and B0s→D+sD−s decays
2025 · ARTICLE · en
A time-dependent, flavour-tagged measurement of CP violation is performed with B0→D+D− and B0s→D+sD−s decays, using data collected by the LHCb detector in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 6 fb−1. In B0→D+D− decays the CP-violation parameters are measured to be SD+D−CD+D−=−0.552±0.100(stat)±0.010(syst),=0.128±0.103(stat)±0.010(syst). In B0s→D+sD−s decays the CP-violating parameter formulation in terms of ϕs and |λ| results in ϕs|λD+sD−s|=−0.086±0.106(stat)±0.028(syst)rad,=1.145±0.126(stat)±0.031(syst). These results represent the most precise single measurement of the CP-violation parameters in their respective channels. For the first time in a single measurement, CP symmetry is observed to be violated in B0→D+D− decays with a significance exceeding six standard deviations.
Measurement of 𝐷0−¯𝐷0 mixing and search for 𝐶𝑃 violation with 𝐷0→𝐾+𝜋− decays
2025 · ARTICLE · en
A measurement of the time-dependent ratio of the 𝐷0 →𝐾+𝜋− to ¯𝐷0→𝐾+𝜋− decay rates is reported. The analysis uses a sample of proton-proton collisions corresponding to an integrated luminosity of 6 fb−1 recorded by the LHCb experiment from 2015 through 2018 at a center-of-mass energy of 13 TeV. The 𝐷0 meson is required to originate from a 𝐷*(2010)+→𝐷0𝜋+ decay, such that its flavor at production is inferred from the charge of the accompanying pion. The measurement is performed simultaneously for the 𝐾+ 𝜋− and 𝐾− 𝜋+ final states, allowing both mixing and 𝐶𝑃-violation parameters to be determined. The value of the ratio of the decay rates at production is determined to be 𝑅𝐾𝜋=(343.1±2.0)×10−5. The mixing parameters are measured to be 𝑐𝐾𝜋 =(51.4 ±3.5) ×10−4 and 𝑐′𝐾𝜋=(13±4)×10−6, where √𝑅𝐾𝜋𝑐𝐾𝜋 is the linear coefficient of the expansion of the ratio as a function of decay time in units of the 𝐷0 lifetime, and 𝑐′𝐾𝜋 is the quadratic coefficient, both averaged between the 𝐾+ 𝜋− and 𝐾− 𝜋+ final states. The precision is improved relative to the previous best measurement by approximately 60%. No evidence for 𝐶𝑃 violation is found.
Курсы (3)
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Математическая статистика 2
2025/2026 · Бакалавриат · рус
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Обработка и анализ данных физического эксперимента · 4 раза
2025/2026, 2024/2025, 2023/2024, 2022/2023 · Бакалавриат · рус
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Машинное обучение 1 · 2 раза
2024/2025, 2023/2024 · Бакалавриат · рус