New charged Higgs effects on ΓKe 2 / ΓKμ 2, fDs and B (B+ → τ+ ν) in the two-Higgs-doublet model

Y. H. Ahn, Chuan-Hung Chen

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Abstract

A new scheme for Yukawa matrices is proposed for free of flavor changing neutral currents (FCNCs) at tree level in general two-Higgs-doublet model (THDM) without imposing symmetry. We find that the new type couplings of charged Higgs to fermions not only depend on the flavors, but also can be ascribed by new CP violating phases. Unlike conventional THDM, the resulted new charged Higgs effects could have the specialties: (a) the influence on Γ (Ke 2 ±) / Γ (Kμ 2 ±) cannot be eliminated, (b) the decay constant of Ds could be enhanced, and (c) enhancement of branching ratio for B+ → τ+ ν could be achieved.

Original languageEnglish
Pages (from-to)57-61
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume690
Issue number1
DOIs
Publication statusPublished - 2010 Jun 7

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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