Measurement of the branching ratio for the process b → τνX

G Abbiendi, Georgios Anagnostou, Paul Bell, Ian Bloodworth, David Charlton, Christopher Hawkes, Roger Homer, Predrag Jovanovic, Thomas McMahon, Stephen O'Neale, Miriam Watson, Peter Watkins, Alan Watson, Nigel Watson, John Wilson

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17 Citations (Scopus)


The inclusive branching ratio for the process b --> tau (-)(v) over bar X-tau 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 (-)(v) over bar X-tau) = (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. (C) 2001 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 8 Nov 2001


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