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

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

2001-08-16

arxiv.org/abs/hep-ex/0108031v1

Phys.Lett.B520:1-10,2001

Physics

High Energy Physics

High Energy Physics - Experiment

17 pages, 2 figures, Submitted to Physics Letters B

Scientific paper

10.1016/S0370-2693(01)01012-7

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.

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