Measurement of the Branching Ratio for the Process b -> tau nu X

Abstract

The inclusive branching ratio for the process b -> tau nu X has been measured using hadronic Z decays collected by the OPAL experiment at LEP in the years 1992-2000. The result is: BR(b -> tau nu X) = (2.78 +/- 0.18 +/- 0.51)% This measurement is consistent with the Standard Model expectation and puts a constraint of tan(beta) / M(H+/-) < 0.53 GeV-1 at the 95% confidence level on Type II Two Higgs Doublet Models.

17 pages, 2 figures, Submitted to Physics Letters B

References in corpus (13)

• Heavy Quark Expansion for the Inclusive Decay $\bar{B}\to \tau \bar{\nu }X$
• Measurements of BR (b -> tau- nubar_tau X) and BR (b -> tau- nubar_tau D*+- X) and Upper Limits on BR (B- -> tau- nubar_tau) and BR (b -> s nu nubar)
• The Inclusive $\bar{B}\to \tau \bar{\nu }X$ Decay in Two Higgs Doublet Models
• QCD corrections to charged Higgs-mediated $b\to c\tau \nu$ decay
• Search for Higgs Bosons in e+e- Collisions at 183 GeV
• Search for Neutral Higgs Bosons in e+e- Collisions at sqrt(s) ~189GeV
• A Measurement of Rb using a Double Tagging Method
• Phenomenological Constraints on $\bar{\Lambda }$ and ${\lambda }_1$
• Combined results on b-hadron production rates, lifetimes, oscillations and semileptonic decays
• Tau lepton distributions in semileptonic B decays
• The tan(beta) - M_H^\pm bound from inclusive semi-tauonic B-decays in the MSSM
• Measurements of R_b, A_FB^b and A_FB^c in e+e- Collisions at 130-189 GeV
• Polarization of tau leptons in semileptonic B decays

Cited by in corpus (14)

• Observation of B^0 \to D^{*-} τ^+ ν_τ decay at Belle
• Charged-Higgs effects in a new B -> D tau nu differential decay distribution
• Observation of B+ -> Dbar*0 tau+ nu_tau and Evidence for B+ -> Dbar^0 tau+ nu_tau at Belle
• Prospects for charged Higgs searches at the LHC
• Observation of the Semileptonic Decays B --> D* tau nubar and Evidence for B --> D tau nubar
• New Physics at a Super Flavor Factory
• Semitauonic $b$-hadron decays: A lepton flavor universality laboratory
• Natural Multi-Higgs Model with Dark Matter and CP Violation
• The Private Higgs
• Measurement of the Semileptonic Decays B --> D tau- nubar_tau and B --> D* tau- nubar_tau
• A Measurement of the tau -> mu nu nu Branching Ratio
• First Measurement of $R(X_{\tau /\ell })$ as an Inclusive Test of the $b\to c\tau \nu$ Anomaly
• Angular distribution asymmetry in tau^- --> pi^- pi^0 nu_tau decay in the two-Higgs-doublet model with large tan beta
• A study of charm production in beauty decays with the OPAL detector at LEP