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

Bibliographic Details
Parent link:	Journal of High Energy Physics Vol. 2020, iss. 6.— 2020.— [129, 18 p.]
Corporate Authors:	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)
Other Authors:	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
Summary:	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.
Published:	2020
Subjects:	электронный ресурс труды учёных ТПУ B physics Beyond Standard Model Flavor physics Hadron-Hadron scattering (experiments) Rare decay
Online Access:	https://doi.org/10.1007/JHEP06(2020)129
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=664635

Internet

https://doi.org/10.1007/JHEP06(2020)129