Upper limit for the decay B−→τ− anti-neutrino (τ) and measurement of the b→τ anti-neutrino (τ) X branching ratio
(2000) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 496, n° 1-2, p. 43-58 (2000)
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- Abstract
- The branching ratio for the leptonic decay of charged B mesons View the MathML source has been measured using selected leptonic View the MathML source and hadronic τ−→ντX decays in View the MathML source decays recorded by DELPHI at LEP1 in 1992–1995. The result, View the MathML source at the 90% confidence level, is consistent with standard model expectations and puts a constraint on the ratio tanβ/MH±<0.46 (GeV/c2)−1 in the framework of models with two Higgs doublets (type II Higgs doublet model). From the missing energy distribution in View the MathML source decays without identified leptons, the View the MathML source branching ratio has been measured in the hadronic channel τ→ντX′. The result, View the MathML source, is consistent with the Standard Model prediction and with previous experimental measurements.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (2000). Upper limit for the decay B−→τ− anti-neutrino (τ) and measurement of the b→τ anti-neutrino (τ) X branching ratio. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 496(1-2), 43-58. https://doi.org/10.1016/S0370-2693(00)01274-0 (Original work published 2000)