Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1846129 | Nuclear Physics B - Proceedings Supplements | 2008 | 6 Pages |
Abstract
B physics is sensitive to the effects of Higgs bosons in the Minimal Supersymmetric Standard Model, if the parameter tanβ is large. I briefly summarise the role of B→μ+μ− and B+→τ+ντ in the hunt for new Higgs effects and present new results on the decay B→Dτντ: Using the analyticity properties of form factors one can predict the ratio R≡B(B→Dτντ)/B(B→Dℓνℓ), ℓ=e,μ, with small hadronic uncertainties. In the Standard Model one finds R=0.31±0.02, and , if the vector form factor of the Heavy Flavor Averaging Group is used. B→Dτντ is competitive with B+→τ+ντ in the search for effects of charged Higgs bosons. Especially sensitive to the latter is the differential distribution in the decay chain .
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