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 of9 fb−1. The τ leptons are selected inclusively, primarily via decays with a single chargedparticle. The four-momentum of the τ lepton is determined by using B+ mesons fromB∗0s2 → B+K− decays. No significant excess is observed, and an upper limit is set on thebranching fractionB(B+ → K+µ−τ+) < 3.9 × 10−5at 90% confidence level.The obtained limit is comparable to the world-best limit.

Search for the lepton flavour violating decay B + → K + μ − τ + using Bs2∗0 decays / Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amhis, Y., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2020:6(2020). [10.1007/JHEP06(2020)129]

Search for the lepton flavour violating decay B + → K + μ − τ + using Bs2∗0 decays

Capriotti, L.;Casse, G.;Sarti, A.;Sciubba, A.;
2020

Abstract

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 of9 fb−1. The τ leptons are selected inclusively, primarily via decays with a single chargedparticle. The four-momentum of the τ lepton is determined by using B+ mesons fromB∗0s2 → B+K− decays. No significant excess is observed, and an upper limit is set on thebranching fractionB(B+ → K+µ−τ+) < 3.9 × 10−5at 90% confidence level.The obtained limit is comparable to the world-best limit.
2020
B physics, Beyond Standard Model, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay
01 Pubblicazione su rivista::01a Articolo in rivista
Search for the lepton flavour violating decay B + → K + μ − τ + using Bs2∗0 decays / Aaij, R., Abellán Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., Aidala, C.A., Aiola, S., Ajaltouni, Z., Akar, S., Albicocco, P., Albrecht, J., Alessio, F., Alexander, M., Alfonso Albero, A., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amhis, Y., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2020:6(2020). [10.1007/JHEP06(2020)129]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1466352
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