Top FB asymmetry vs. (semi)leptonic B decays in multi-Higgs-doublet models
Abstract
We investigate the semileptonic and leptonic B decays, B to D^{(*)} tau nu and B to tau nu in our multi-Higgs-doublet models, while keeping in mind the enhancement of the top forward-backward (FB) asymmetry (A^t_{FB}) at the Tevatron. In these models, the extra (pseudo)scalar bosons contribute to A^t_{FB} with large flavor-changing Yukawa couplings involving the top quark, but the contribution of the charged Higgs boson to A^t_{FB} is negligible. However, it may significantly affect B decays: especially, B to D^{(*)} tau nu and B to tau nu. We investigate the constraints on the B decays, based on the recent results in BaBar and Belle experiments, and discuss the possibility that the allowed parameter region in the B decays can achieve large A^t_{FB}.
Keywords
Cite
@article{arxiv.1304.4413,
title = {Top FB asymmetry vs. (semi)leptonic B decays in multi-Higgs-doublet models},
author = {P. Ko and Yuji Omura and Chaehyun Yu},
journal= {arXiv preprint arXiv:1304.4413},
year = {2013}
}
Comments
5 pages, 4 figures. Talk given at Toyama International Workshop on Higgs as a Probe of New Physics 2013 (HPNP2013)