# TTP08-06 Charged-Higgs effects in a new B -> D tau nu differential decay distribution

TTP08-06 Charged-Higgs effects in a new B -

TTP08-06 Charged-Higgs effects in a new B -

D tau nu differential decay distribution > We present a detailed analysis of charged-Higgs effects in the decay B → D tau nu. Updating the relevant formfactors, we find this decay mode competitive with and complementary to B → tau nu. The differential distribution in the decay chain B → D nu tau[→ pi nu] excellently discriminates between Standard-Model and charged-Higgs contributions. By measuring the D and pi energies and the angle between the D and pi tracks one can determine the magnitude and phase of the effective charged-Higgs coupling g_S.

 Ulrich Nierste, Stephanie Trine, Susanne Westhoff Phys. Rev. D 78 015006 2008 PDF PostScript arXiv