Пахлов Павел Николаевич
Московский институт электроники и математики им. А.Н. Тихонова
Профессиональные интересы
Должности
- Ведущий научный сотрудник — Московский институт электроники и математики им. А.Н. Тихонова, Международная лаборатория физики элементарных частиц
- Профессор — Московский институт электроники и математики им. А.Н. Тихонова, Департамент электронной инженерии
Био
- · Начал работать в НИУ ВШЭ в 2020 году.
- · Научно-педагогический стаж: 8 лет.
Образование
- 2008 · Доктор физико-математических наук: Высшая аттестационная комиссия Республика Болгария
- 1990 · Специалитет: Московский физико-технический институт, специальность «Прикладная математика и физика», квалификация «Инженер-физик»
Опыт работы
- · 2000 - н.в.: профессор кафедры физики элемнтарных частиц МФТИ
- · 2009 - н.в.: профессор кафедры экспериментальной ядерной физики и космофизики МИФИ
- · 2020 - н.в.: профессор кафедры дискретной математики МИЭМ ВШЭ
Награды и поощрения
- · Надбавка за публикацию в журнале из Списка А (и приравненном к нему научном издании) (2025–2026, 2024–2025, 2023–2024)
- · Надбавка за публикацию в международном рецензируемом научном издании (2021–2022)
- · Лучший преподаватель — 2021–2022
Гранты и проекты
- — · на соискание учёной степени кандидата наук
Конференции (2)
Показать все
- · 2024: The 2024 International Workshop on Future Tau Charm Facilities (Хефей). Доклад: On possibility to measure all Michel parameters at SCTF
- · 2020: 5th International Conference on Particle Physics and Astrophysics (Москва). Доклад: Recent experimental results in B physics
Идентификаторы исследователя
- ORCID:
0000-0001-7426-4824 - ResearcherID:
K-2158-2013 - SPIN РИНЦ:
8970-4128 - Google Scholar: https://scholar.google.com/citations?view_op=list_works&hl=en&user=e7cw0S0AAAAJ&gmla=AJsN-F4FR7lT3z9nIYiTWE4cERmOHUQFaFo-4UOcXqJvW6DDryFyiYt3bz1BAYEHAONnW7gIbRs5alJrdLqg2FiSS_2VBm5lQGHwIu_jDYfo1LAAy6pUPSw
- Scopus AuthorID:
35227740400
Публикации (126)
Design and Commissioning of Readout Electronics for a K L 0 and μ Detector at the Belle II Experiment
2026 · ARTICLE · en
The K-long and muon detector (KLM) constitutes the outer-most volume of the Belle II spectrometer at the interaction region of the SuperKEKB collider in Tsukuba, Japan. The KLM detector was partially upgraded since the Belle experiment by replacing many of its resistive-plate chambers with scintillators containing wavelength-shifting fibers and instrumenting it with silicon photomultipliers. We describe the readout electronics, firmware, and software created to control and acquire data from the scintillators and resistive-plate chambers.
Kink Finder at Belle II
2026 в печати · ARTICLE · en
We present a track-finding algorithm for the Belle II experiment that specifically targets so-called kinks: signatures of charged particles decaying or scattering in-flight in the detector material, resulting in a sudden and significant change of the particle's flight direction. Our benchmark studies of this Kink Finder show that the reconstruction efficiency for such signatures is about 40%, compared to a value of around 11% for the standard Belle II track-finding algorithm. Our studies also show that the Kink Finder significantly improves the resolution of the secondary track parameters, suppresses the number of cloned tracks, and reduces the PID misidentification rates for kaon and pions.
Поиск Новой физики в распадах B → φK
2026 в печати · ARTICLE · ru
Присутствие вклада Новой физики в индуцированные петлевой диаграммой переходы b → sss может приводить к заметному отклонению параметра непрямого CP-нарушения в распадах B0 → φK0 от предсказаний Стандартной модели. Кроме того, Новая физика может проявиться в возникновении заметного прямого CP-нарушения в распадах B → φK, если не только слабая, но и сильная фазы Новой физики отличны от фаз Стандартной модели. В данной работе мы оцениваем точность ограничений на параметры Новой физики из последних результатов измерений CP-нарушения в распадах B → φK.
Observation of time-dependent CP violation and measurement of the branching fraction of B0→J/ψπ0 decays
2025 в печати · ARTICLE · en
We present a measurement of the branching fraction and time-dependent charge-parity (𝐶𝑃) decay-rate asymmetries in 𝐵0 →𝐽/𝜓𝜋0 decays. The data sample was collected with the Belle II detector at the SuperKEKB asymmetric 𝑒+𝑒− collider in 2019–2022 and contains (387 ±6) ×106 𝐵¯𝐵meson pairs from ϒ(4𝑆) decays. We reconstruct 392 ±24 signal decays and fit the 𝐶𝑃 parameters from the distribution of the proper-decay-time difference of the two 𝐵 mesons. We measure the branching fraction to be (ℬ0→𝐽/𝜓𝜋0)=(2.00±0.12±0.09)×10−5 and the direct and mixing-induced 𝐶𝑃 asymmetries to be 𝐶𝐶𝑃 =0.13 ±0.12 ±0.03 and 𝑆𝐶𝑃 =−0.88 ±0.17 ±0.03, respectively, where the first uncertainties are statistical and the second are systematic. We observe mixing-induced 𝐶𝑃 violation with a significance of 5.0 standard deviations for the first time in this mode.
Measurement of CP asymmetries in B0→K0Sπ0γ decays at Belle II
2025 в печати · ARTICLE · en
We report measurements of time-dependent 𝐶𝑃 asymmetries in 𝐵0 →𝐾0𝑆𝜋0𝛾 decays based on a data sample of (388±6)×106 𝐵¯𝐵 events collected at the ϒ(4𝑆) resonance with the Belle II detector. The Belle II experiment operates at the SuperKEKB asymmetric-energy 𝑒+𝑒− collider. We measure decay-time distributions to determine 𝐶𝑃 -violating parameters 𝑆 and 𝐶. We determine these parameters for two ranges of 𝐾0𝑆𝜋0 invariant mass: 𝑚(𝐾0𝑆𝜋0)∈(0.8,1.0) GeV/𝑐2, which is dominated by 𝐵0→𝐾*0(→𝐾0𝑆𝜋0)𝛾 decays, and a complementary region 𝑚(𝐾0𝑆𝜋0)∈(0.6,0.8)∪(1.0,1.8) GeV/𝑐2. Our results have improved precision as compared to previous measurements and are consistent with theory predictions.
Measurement of the integrated luminosity of data samples collected during 2019-2022 by the Belle II experiment
2025 в печати · ARTICLE · en
A series of data samples was collected with the Belle II detector at the SuperKEKB collider from March 2019 to June 2022. We determine the integrated luminosities of these data samples using three distinct methodologies involving Bhabha (e+e−→e+e−(nγ)), digamma (e+e−→γγ(nγ)), and dimuon (e+e−→μ+μ−(nγ)) events. The total integrated luminosity obtained with Bhabha, digamma, and dimuon events is (426.88 ± 0.03 ± 2.61) fb−1, (429.28 ± 0.03 ± 2.62) fb−1, and (423.99 ± 0.04 ± 3.83) fb−1, where the first uncertainties are statistical and the second are systematic. The resulting total integrated luminosity obtained from the combination of the three methods is (427.87 ± 2.01) fb−1
Measurement of the inclusive branching fractions for $${B}_{s}^{0}$$ decays into D mesons via hadronic tagging
2025 · ARTICLE · en
We report measurements of the absolute branching fractions Br(Bs0 → Ds± X), Br(Bs0 → D0/D0-bar X), and Br(Bs0 → D± X), where the latter is measured for the first time. The results are based on a 121.4 fb−1 data sample collected at the Υ(10860) resonance by the Belle detector at the KEKB asymmetric-energy e+e − collider. We reconstruct one Bs0 meson in e+e− → Υ(10860) → Bs*Bs*-bar events and measure yields of Ds+, D0 and D+ mesons in the rest of the event. We obtain Br(Bs → Ds± X) = (68.6 ± 7.2 ± 4.0)%, Br(Bs0 → D0/D0-bar X) = (21.5 ± 6.1 ± 1.8)%, and Br(Bs0 → D± X) = (12.6 ± 4.6 ± 1.3)%, where the first uncertainty is statistical and the second is systematic. Averaging with previous Belle measurements gives Br(Bs0 → Ds± X) = (63.4 ± 4.5 ± 2.2)% and Br(Bs0 → D0/D0-bar X) = (23.9 ± 4.1 ± 1.8)%. For the Bs0 production fraction at the Υ(10860), we find fs = (21.4 +1.5 −1.7 )%.
Measurement of the branching fraction and CP-violating asymmetry of the decay B0→π0π0 using 387 million bottom-antibottom meson pairs in Belle II data
2025 в печати · ARTICLE · en
We measure the branching fraction and CP-violating flavor-dependent rate asymmetry of B0→π0π0 decays reconstructed using the Belle II detector in an electron-positron collision sample containing 387×106 BB⎯⎯⎯⎯ pairs. Using an optimized event selection, we find 126±20 signal decays in a fit to background-discriminating and flavor-sensitive distributions. The resulting branching fraction is (1.25±0.23)×10−6 and the CP-violating asymmetry is 0.03±0.30.
Measurement of branching fractions, CP asymmetry, and isospin asymmetry for B→ργ decays using Belle and Belle II data
2025 в печати · ARTICLE · en
We present measurements of B+→ρ+γ and B0→ρ0γ decays using a combined data sample of 772×106 BB⎯⎯⎯⎯ pairs collected by the Belle experiment and 387×106 BB⎯⎯⎯⎯ pairs collected by the Belle II experiment in e+e− collisions at the Υ(4S) resonance. After an optimized selection, a simultaneous fit to the Belle and Belle II data sets yields 114±12 B+→ρ+γ and 99±12 B0→ρ0γ decays. The measured branching fractions are (13.1+2.0+1.3−1.9−1.2)×10−7 and (7.5±1.3+1.0−0.8)×10−7 for B+→ρ+γ and B0→ρ0γ decays, respectively, where the first uncertainty is statistical and the second is systematic. We also measure the isospin asymmetry AI(B→ργ)=(10.9+11.2+7.8−11.7−7.3)% and the direct CP asymmetry ACP(B+→ρ+γ)=(−8.2±15.2+1.6−1.2)%.
Measurement of the Branching Fraction of Λ+c→pK0Sπ0 at Belle
2025 в печати · ARTICLE · en
We report a precise measurement of the ratio of branching fractions (Λ+c→pK0Sπ0)/(Λ+c→pK−π+) using 980 fb−1 of e+e− data from the Belle experiment. We obtain a value of (Λ+c→pK0Sπ0)/(Λ+c→pK−π+)=0.339±0.002±0.009, where the first and second uncertainties are statistical and systematic, respectively. This Belle result is consistent with the previous measurement from the CLEO experiment but has a fivefold improvement in precision. By combining our result with the world average (Λ+c→pK−π+), we obtain the absolute branching fraction (Λ+c→pK0Sπ0)=(2.12±0.01±0.05±0.10)%, where the uncertainties are statistical, systematic, and the uncertainty in the absolute branching fraction scale (Λ+c→pK−π+), respectively. This measurement can shed light on hadronic decay mechanisms in charmed baryon decays.
Курсы (2)
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Дискретная математика · 3 раза
2025/2026, 2024/2025, 2023/2024 · Бакалавриат · рус
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11.03.02. Инфокоммуникационные технологии и системы связи · 2 раза
2022/2023, 2021/2022 · Бакалавриат · рус