Szczegóły publikacji
Opis bibliograficzny
A search for lepton-flavour violating $\tau \to 3\mu$ decays with the ATLAS detector / G. Aad, [et al.], L. ADAMCZYK, [et al.], P. BALEK, [et al.], T. BOŁD, [et al.], K. M. CIEŚLA, [et al.], W. DĄBROWSKI, [et al.], K. DOMIJAN, [et al.], M. DYNDAŁ, [et al.], I. GRABOWSKA-BOŁD, [et al.], S. KOPERNY, [et al.], K. MAJ, [et al.], B. MINDUR, [et al.], Ł. MŁYNARSKA, [et al.], P. A. POTĘPA, [et al.], M. PRZYBYCIEŃ, [et al.], P. RYBCZYŃSKI, [et al.], C. VARNI, [et al.] // Physics Letters . B ; ISSN 0370-2693. — 2026 — vol. 880 art. no. 140748, s. 1–18. — Wymagania systemowe: Adobe Reader. — Bibliogr. s. 17–18, Abstr. — Publikacja dostępna online od: 2026-07-15
Autorzy (2847)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 169967 |
|---|---|
| Data dodania do BaDAP | 2026-10-19 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2026.140748 |
| Rok publikacji | 2026 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
A search for charged lepton flavour violation in τ → 3μ decays is performed in pp collisions at a centre-of-mass energy of 13 TeV using ATLAS data collected between 2016 and 2018, corresponding to an integrated luminosity of 137 fb−1. The search is optimised for the electroweak W → τν production channel, due to its higher trigger efficiency, but also considers potential signal events from heavy-flavour production. Data are collected using two-muon and three-muon triggers and a multivariate analysis is used to separate the signal from the background. An unbinned likelihood fit is then performed to the resulting three-muon invariant mass spectrum and the data are found to be compatible with the background-only hypothesis. The observed (expected) limit on the branching ratio B(τ → 3μ) is found to be 8.7×10−8 (7.5×10−8) at 90% CL.
