2011/07/06 by Gianluca Blankenburg, Blankenburg, Gianluca, Gino Isidori +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.1107.1216
5 pages, latex, 4 figs. Discussion of B->Xs gamma bound and corresponding numerical analysis significantly improved. Main conclusions unchanged
arxiv created 2012/05/30 · arxiv updated 2012/05/31
We analyse the B → τν decay in a generic two-Higgs doublet model satisfying the MFV hypothesis. In particular, we analyse under which conditions \BR(B → τν) can be substantially enhanced over its SM value, taking into account the constraints of K → μν, B → Xs γ, and Bs → μ+ μ-. We find that for large tanβ values and Peccei-Quinn symmetry breaking terms of \cO(1/tanβ) a sizable (∼ 50%) enhancement of \BR(B → τν) is possible, even for mH ∼ 1 TeV.