Search for the lepton flavour violating decay B+ → K+μ−τ+ using B∗0s2 decays

Search for the lepton flavour violating decay B+ → K+μ−τ+ using B∗0s2 decays

Podrobná bibliografie
Parent link:Journal of High Energy Physics
Vol. 2020, iss. 6.— 2020.— [129, 18 p.]
Korporace: Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов, Национальный исследовательский Томский политехнический университет Инженерная школа информационных технологий и робототехники Отделение автоматизации и робототехники (ОАР)
Další autoři: Aaij R. Roel, Beteta C. A. Carlos Abellan, Ackernley T., Adeva B. Bernardo, Eydelman S. I. Semen Isaakovich, Kharisova A. E. Anastasiya Evgenjevna, Panshin G. L. Gennady Leonidovich
Shrnutí:Title screen
A search is presented for the lepton flavour violating decay B+ → K+μ−τ+ using a sample of proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb−1. The τ leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of the τ lepton is determined by using B+ mesons from B∗0s2→B+K−Bs2∗0→B+K− decays. No significant excess is observed, and an upper limit is set on the branching fractionℬ(B+ → K+μ−τ+) < 3.9 × 10−5 at 90 %  confidence level.The obtained limit is comparable to the world-best limit.
Vydáno: 2020
Témata:
электронный ресурс
труды учёных ТПУ
B physics
Beyond Standard Model
Flavor physics
Hadron-Hadron scattering (experiments)
Rare decay
On-line přístup:https://doi.org/10.1007/JHEP06(2020)129
Médium: Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664635
Popis
Shrnutí:Title screen
A search is presented for the lepton flavour violating decay B+ → K+μ−τ+ using a sample of proton-proton collisions at centre-of-mass energies of 7, 8, and 13 TeV, collected with the LHCb detector and corresponding to a total integrated luminosity of 9 fb−1. The τ leptons are selected inclusively, primarily via decays with a single charged particle. The four-momentum of the τ lepton is determined by using B+ mesons from B∗0s2→B+K−Bs2∗0→B+K− decays. No significant excess is observed, and an upper limit is set on the branching fractionℬ(B+ → K+μ−τ+) < 3.9 × 10−5 at 90 %  confidence level.The obtained limit is comparable to the world-best limit.
DOI:10.1007/JHEP06(2020)129

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