Measurement of the branching ratio for the process →τ

2001/08/16 by The OPAL collaboration, C. Ainsley, G. Abbiendi +98 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex

paper · pdf · doi:10.1016/s0370-2693(01)01012-7

published as Phys.Lett.B520:1-10,2001 · 17 pages, 2 figures, Submitted to Physics Letters B

arxiv created 2001/08/16 · openalex publication_date 2001/11/01 · arxiv updated 2009/11/30 · openalex created_date 2019/03/02 · openalex updated_date 2026/08/04

Abstract

The inclusive branching ratio for the process b→τ−ν̄τX has been measured using hadronic Z decays collected by the OPAL experiment at LEP in the years 1992–2000. The result is: BR(b→τ−ν̄τX)=(2.78±0.18±0.51)%. This measurement is consistent with the Standard Model expectation and puts a constraint of tanβ/MH±<0.53 GeV−1 at the 95% confidence level on Type II Two Higgs Doublet Models.

Citations

• Combined results on b-hadron production rates, lifetimes, oscillations and semileptonic decays
• The tan β − MH± bound from inclusive semi-tauonic B-decays in the MSSM

Cited by

• Measurement of the semileptonic decaysB¯→Dτ−ν¯τandB¯→D*τ−ν¯τ