The effect of H^\pm on B^\pm -> τ^\pm νand B^\pm -> μ^\pm ν

Abstract

The hitherto unobserved purely leptonic decays B^\pm -> τ^\pm νand B^\pm -> μ^\pm νare of much interest at current and future runs of the e+e- B factories. Such decays are sensitive to charged Higgs bosons (H^\pm) at the tree-level and provide essentially model independent constraints on \tanβ/m_{H^\pm}. We include the large corrections to the H^\pm-ub coupling induced by virtual SUSY effects and show that the bounds on \tanβ/m_{H^\pm} can be significantly weakened or strengthened.

arXiv comment8 pages, 2 figures. Some references added

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