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)
Update of inclusive cross sections of single and pairs of identified light charged hadrons
2020 · ARTICLE · en
We report new measurements of the production cross sections of pairs of charged pions and kaons as a function of their fractional energies using various fractional-energy definitions. Two different fractional-energy definitions were used and compared to the conventional fractional-energy definition reported previously. The new variables aim at either identifying dihadron cross sections in terms of single-hadron fragmentation functions, or to provide a means of characterizing the transverse momentum created in the fragmentation process. The results were obtained applying the updated initial-state radiation correction used in other recent Belle publications on light-hadron production cross sections. In addition, production cross sections of single charged pions, kaons, and protons were also updated using this initial-state radiation correction. The cross sections are obtained from a 558 fb-1 data sample collected at the γ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3
Evidence for a vector charmoniumlike state in e+e- → Ds+ Ds2∗ (2573)-+ c. c.
2020 · ARTICLE · en
We report the measurement of e+e-→Ds+Ds2∗(2573)-+c.c. via initial-state radiation using a data sample of an integrated luminosity of 921.9 fb-1 collected with the Belle detector at the γ(4S) and nearby. We find evidence for an enhancement with a 3.4σ significance in the invariant mass of Ds+Ds2∗(2573)-+c.c. The measured mass and width are (4619.8-8.0+8.9(stat.)±2.3(syst.)) MeV/c2 and (47.0-14.8+31.3(stat.)±4.6(syst.)) MeV, respectively. The mass, width, and quantum numbers of this enhancement are consistent with the charmoniumlike state at 4626 MeV/c2 recently reported by Belle in e+e-→Ds+Ds1(2536)-+c.c. The product of the e+e-→Ds+Ds2∗(2573)-+c.c. cross section and the branching fraction of Ds2∗(2573)-→D¯0K- is measured from Ds+Ds2∗(2573)- threshold to 5.6 GeV. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
First search for the ηc2(1D) in B decays at Belle
2020 · ARTICLE · en
The first dedicated search for the ηc2(1D) is carried out using the decays B+→ ηc2(1D)K+, B0 → ηc2(1D)KS0, B0→ ηc2(1D)π−K+, and B+→ ηc2(1D)π+KS0 with ηc2(1D) → hcγ. No significant signal is found. For the ηc2(1D) mass range between 3795 and 3845 MeV/c2, the branching-fraction upper limits are determined to be ℬ(B+→ ηc2(1D)K+) × ℬ(ηc2(1D) → hcγ)
Measurement of the integrated luminosity of the Phase 2 data of the Belle II experiment
2020 · ARTICLE · en
From April to July 2018, a data sample at the peak energy of the γ(4S) resonance was collected with the Belle II detector at the SuperKEKB electron-positron collider. This is the first data sample of the Belle II experiment. Using Bhabha and digamma events, we measure the integrated luminosity of the data sample to be (496.3 ± 0.3 ± 3.0) pb-1, where the first uncertainty is statistical and the second is systematic. This work provides a basis for future luminosity measurements at Belle II. © 2019 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
Study of B →p p ππ
2020 · ARTICLE · en
Using a data sample of 772×106 BB pairs collected on the Ï'(4S) resonance with the Belle detector at the KEKB asymmetric energy e+e-collider, we report the observation of B0→ppπ+π- A nd the first observation of B+→ppπ+π0. We measure a decay branching fraction of (0.83±0.17±0.17)×10-6 in B0→ppπ+π-for Mπ+π-
Observation of the Radiative Decays of ψ (1S) to χc1
2020 · ARTICLE · en
We report the first observation of the radiative decay of the ψ(1S) into a charmonium state. The significance of the observed signal of ψ(1S)→γχc1 is 6.3 standard deviations including systematics. The branching fraction is calculated to be B[ψ(1S)→γχc1]=[4.7-1.8+2.4(stat)-0.5+0.4(sys)×10-5]. We also searched for ψ(1S) radiative decays into χc0,2 and ηc(1S,2S), and set upper limits on their branching fractions. These results are obtained from a 24.9 fb-1 data sample collected with the Belle detector at the KEKB asymmetric-energy e+e- collider at a center-of-mass energy equal to the ψ(2S) mass using ψ(1S) tagging by the ψ(2S)→ψ(1S)π+π- transitions. © 2020 authors. Published by the American Physical Society.
Search for an Invisibly Decaying Z′ Boson at Belle II in e+e- →μ+μ- (e±μ) Plus Missing Energy Final States
2020 · ARTICLE · en
Theories beyond the standard model often predict the existence of an additional neutral boson, the Z′. Using data collected by the Belle II experiment during 2018 at the SuperKEKB collider, we perform the first searches for the invisible decay of a Z′ in the process e+e-→μ+μ-Z′ and of a lepton-flavor-violating Z′ in e+e-→e±μZ′. We do not find any excess of events and set 90% credibility level upper limits on the cross sections of these processes. We translate the former, in the framework of an Lμ-Lτ theory, into upper limits on the Z′ coupling constant at the level of 5×10-2-1 for MZ′≤6 GeV/c2. © 2020 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.
Measurement of R (D) and R (D∗) with a Semileptonic Tagging Method
2020 · ARTICLE · en
The experimental results on the ratios of branching fractions R(D)=B(B→Dτ-ντ)/B(B→Dℓ-νℓ) and R(D∗)=B(B→D∗τ-ντ)/B(B→D∗ℓ-νℓ), where ℓ denotes an electron or a muon, show a long-standing discrepancy with the standard model predictions, and might hint at a violation of lepton flavor universality. We report a new simultaneous measurement of R(D) and R(D∗), based on a data sample containing 772×106 BB events recorded at the ϒ(4S) resonance with the Belle detector at the KEKB e+e- collider. In this analysis the tag-side B meson is reconstructed in a semileptonic decay mode and the signal-side τ is reconstructed in a purely leptonic decay. The measured values are R(D)=0.307±0.037±0.016 and R(D∗)=0.283±0.018±0.014, where the first uncertainties are statistical and the second are systematic. These results are in agreement with the standard model predictions within 0.2, 1.1, and 0.8 standard deviations for R(D), R(D∗), and their combination, respectively. This work constitutes the most precise measurements of R(D) and R(D∗) performed to date as well as the first result for R(D) based on a semileptonic tagging method. © 2020 authors.
Measurement of D0 -D¯ 0 mixing parameters using semileptonic decays of neutral kaon
2020 · ARTICLE · en
We propose a new method to extract D0−D¯0 mixing parameters using the D0→K¯0π0 decay with the K¯0 reconstructed in the semileptonic mode. Although a K0→π±l∓νl decay suffers from low statistics and complexity of the secondary vertex reconstruction in comparison to the standard KS→π+π− vertex, it provides much richer, sometimes unique information about the initial state of a K0-meson produced in a heavy-flavor hadron decay. In this paper it is shown that the reconstruction of the chain D0→K0(π±l∓νl)π0 allows one to extract the strong phase difference between the doubly Cabibbo-suppressed and Cabibbo-favored decay amplitudes, which is of key importance for determination of the D0−D¯0 mixing parameters.
Search for Axion-Like Particles produced in e+e− collisions at Belle II
2020 · ARTICLE · en
We present a search for the direct production of a light pseudoscalar a decaying into two photons with the Belle II detector at the SuperKEKB collider. We search for the process e+e−→γa,a→γγ in the mass range 0.2mac2 using data corresponding to an integrated luminosity of (445±3)pb−1. Light pseudoscalars interacting predominantly with standard model gauge bosons (so-called axion-like particles or ALPs) are frequently postulated in extensions of the standard model. We find no evidence for ALPs and set 95% confidence level upper limits on the coupling strength gaγγ of ALPs to photons at the level of 10−3GeV−1. The limits are the most restrictive to date for 0.2mac2.
Курсы (2)
-
Дискретная математика · 3 раза
2025/2026, 2024/2025, 2023/2024 · Бакалавриат · рус
-
11.03.02. Инфокоммуникационные технологии и системы связи · 2 раза
2022/2023, 2021/2022 · Бакалавриат · рус