2008/01/31 by Ulrich Nierste, Stéphanie Trine, Stephanie Trine +1 · 120 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Coupling (piping) #Higgs boson #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #hep-ph
paper · pdf · doi:10.1103/physrevd.78.015006
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 78(1) (American Physical Society) · 5 pages, plots of HFAG form factor and B -> tau nu branching fraction included, text extended, conclusions unchanged, to appear in Phys. Rev. D
arxiv created 2008/06/02 · openalex publication_date 2008/07/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We show that the decay mode B\ensuremath→D\ensuremathτ\ensuremathν_\ensuremathτ is competitive with and complementary to B\ensuremath→\ensuremathτ\ensuremathν_\ensuremathτ in the search for charged-Higgs effects. Updating the relevant form factors, we find that the differential distribution in the decay chain B\ensuremath→D\ensuremathν_\ensuremathτ\ensuremathτ^\ensuremath-[\ensuremath→\ensuremathπ^\ensuremath-\ensuremathν_\ensuremathτ] excellently discriminates between standard model and charged-Higgs contributions. By measuring the D and \ensuremathπ^\ensuremath- energies and the angle between the D and \ensuremathπ^\ensuremath- three-momenta, one can determine the effective charged-Higgs coupling including a possible CP-violating phase.