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$B \rightarrow {\tau}{\nu}X$ decays in a two Higgs doublet model
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classification
hep-ph
keywords
decaysdoubletexpansionhiggsmodelrightarrowbetacalculate
abstract
We calculate the decay rate for inclusive $B \rightarrow {\tau}{\nu}X$ decays in a two Higgs doublet model using heavy quark expansion and operator product expansion. Combined with the recent measurement of Br($B \ra \tau \nu X$), we find a limit $\tan \beta < 0.58 m_H/\mbox{GeV}$ at 90\%\ C.L..
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