Szczegóły publikacji
Opis bibliograficzny
A measurement of the $\tau^{-} \to \mu^{-}\bar\nu_{\mu}\nu_{\tau}$ branching ratio / G. Abbiendi, [et al.], M. PRZYBYCIEŃ, [et al.] // Physics Letters. B, Nuclear Elementary Particle and High-Energy Physics ; ISSN 0370-2693. — 2003 — vol. 551 iss. 1–2, s. 35–48. — Bibliogr. s. 48, Abstr.
Autorzy (360)
- AGHPrzybycień Mariusz
- Abbiendi Giovanni
Dane bibliometryczne
| ID BaDAP | 14006 |
|---|---|
| Data dodania do BaDAP | 2003-09-29 |
| Tekst źródłowy | URL |
| DOI | 10.1016/S0370-2693(02)03020-4 |
| Rok publikacji | 2003 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physics Letters, B |
Abstract
The tau(-) –> mu(-)(nu) over bar (mu)nu(tau) branching ratio has been measured using data collected from 1990 to 1995 by the OPAL detector at the LEP collider. The resulting value of B (tau(-) –> mu-(nu) over bar (mu)nu(tau))= 0. 1734 +/- 0.0009(stat) +/- 0.0006(syst) has been used in conjunction with other OPAL measurements to test lepton universality, yielding the coupling constant ratios g(mu)/g(e) = 1.0005 +/- 0.0044 and g(tau)/g(e) = 1.0031 +/- 0.0048, in good agreement with the Standard Model prediction of unity. A value for the Michel parameter eta = 0.004 +/- 0.037 has also been determined and used to find a limit for the mass of the charged Higgs boson, m(H)+/- > 1.28 tan beta, in the Minimal Supersymmetric Standard Model. (C) 2002 Elsevier Science B.V. All rights reserved.
