Szczegóły publikacji
Opis bibliograficzny
Search for the lepton-flavor-violating decays $B^{0}_{s} \to \tau^{\pm}\mu^{\mp}$ and $B^{0} \to \tau^{\pm}\mu^{\mp}$ / R. Aaij [et al.], A. DENDEK [et al.], M. FIRLEJ [et al.], T. FIUTOWSKI [et al.], M. IDZIK [et al.], P. KOPCIEWICZ [et al.], W. KRUPA [et al.], W. KUCEWICZ [et al.], M. W. MAJEWSKI [et al.], J. MOROŃ [et al.], A. OBŁĄKOWSKA-MUCHA [et al.], B. RACHWAŁ [et al.], K. ŚWIENTEK [et al.], T. SZUMLAK [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2019 — vol. 123 iss. 21 art. no. 211801, s. 211801-1–211801-11. — Bibliogr. s. 211801-6. — Publikacja dostępna online od: 2019-11-22. — W. Kucewicz - pierwsza afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (868)
Dane bibliometryczne
| ID BaDAP | 126817 |
|---|---|
| Data dodania do BaDAP | 2020-01-29 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevLett.123.211801 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physical Review Letters |
Abstract
Results are reported from a search for the rare decays B-s(0) -> tau(+/-)mu(+/-) 1T and B -> tau(+/-)mu(+/-), where the r lepton is reconstructed in the channel r- irrg vr. These processes are effectively forbidden in the standard model, hut they can potentially occur at detectable rates in models of new physics that can induce lepton flavor-violating decays. The search is based on a data sample corresponding to 3 fb-1 of proton -proton collisions recorded by the LHCb experiment in 2011 and 2012. The event yields observed in the signal regions for both processes are consistent with the expected standard model backgrounds. Because of the limited mass resolution arising from the undetected r neutrino, the 1.3 and B signal regions are highly overlapping. Assuming no contribution from B r1, r, the upper limit 8(B r 71) < 4.2 x 10-5 is obtained at 95% confidence level. If no contribution from tau(+/-)mu(+/-) is assumed, a limit of B(B r prn < 1.4 x 10-5 is obtained at 95% confidence level. These results represent the first limit on B(B? r5+) and the most stringent limit on B(B tau(+/-)mu(+/-).)
