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

Abstract

We show that the decay mode B -> D tau nu is competitive with and complementary to B -> tau nu in the search for charged-Higgs effects. Updating the relevant form factors, we find that 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 three-momenta one can determine the effective charged-Higgs coupling including a possible CP-violating phase.

5 pages, plots of HFAG form factor and B -> tau nu branching fraction included, text extended, conclusions unchanged, to appear in Phys. Rev. D

References in corpus (4)

• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Heavy Quark Masses from Sum Rules in Four-Loop Approximation
• Charged Higgs on $B^{-}\to \tau {\bar{\nu }}_{\tau }$ and $\bar{B}\to P(V)\ell {\bar{\nu }}_{\ell }$
• Quenched lattice calculation of semileptonic heavy-light meson form factors

Cited by in corpus (6)

• B -> D tau nu Branching Ratios: Opportunity for Lattice QCD and Hadron Colliders
• Natural Multi-Higgs Model with Dark Matter and CP Violation
• Complete Michel Parameter Analysis of inclusive semileptonic b \to c transition
• Chiral corrections to the scalar form factor in B_q to D_q transitions
• Higgs hunting with B decays
• Chiral loop corrections in B to D l nu decays