Effect of H^\pm on B^\pm\to τ^\pmν_τand D^\pm_s\to μ^\pmν_μ,τ^\pmν_τ

Details Effect of H^\pm on B^\pm\to τ^\pmν_τand D^\pm_s\to μ^\pmν_μ,τ^\pmν_τ Effect of H^\pm on B^\pm\to τ^\pmν_τand D^\pm_s\to μ^\pmν_μ,τ^\pmν_τ

2007-01-10

arxiv.org/abs/hep-ph/0701078v3

Phys.Rev.D75:075004,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 4 figures, reference added, minor alterations, version to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.75.075004

The recent observation of the purely leptonic decay B^\pm\to \tau^\pm\nu_\tau at the B factories permits a sizeable contribution from a charged Higgs boson (H^\pm). Such a H^\pm would also contribute to the decays D^\pm_s\to \mu^\pm\nu_\mu and D^\pm_s\to \tau^\pm\nu_\tau, which are being measured with increasing precision at CLEO-c. We show that the branching ratios of D^\pm_s\to \mu^\pm\nu_\mu and D^\pm_s\to \tau^\pm\nu_\tau could be suppressed by up to 10% from the Standard Model prediction, which is larger than the anticipated precision in the measurements of these decays at forthcoming BES-III.

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