Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-08-15
JHEP0610:053,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
21 pages, 10 tables, typos corrected
Scientific paper
10.1088/1126-6708/2006/10/053
We study the charged Higgs effects on the decays of $B^{-} \to \tau \bar\nu_{\tau}$ and $\bar B\to P(V) \ell \bar\nu_{\ell}$ with $P=\pi^{+},D^{+}$ and $V=\rho^{+},D^{*+}$. We concentrate on the minimal supersymmetric standard model with nonholomorphic terms at a large $\tan\beta$. To extract new physics contributions, we define several physical quantities related to the decay rate and angular distributions to reduce uncertainties from the QCD as well as the CKM elements. With the constraints from the recent measurement on the decay branching ratio of $B^{-} \to \tau \bar\nu_{\tau}$, we find that the charged Higgs effects could be large and measurable.
Chen Chuan-Hung
Geng Chao-Qiang
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