Constraints and implications on Higgs FCNC couplings from precision measurement of B-s -> mu(+) mu(-) decay
Journal
Physical Review D
Journal Volume
6
Journal Issue
16
Pages
35032
Date Issued
2018
Author(s)
Abstract
We study constraints and implications of the recent LHCb measurement of B(Bs→μ+μ-) for tree-level Higgs-mediated flavor-changing neutral current (FCNC) interactions. Combined with experimental data on the Bs mass difference Δms and the h→μτ and h→τ+τ- decay branching ratios from the LHC, we find that the Higgs FCNC couplings are severely constrained. The allowed regions for Bs→μτ, ττ and h→sb decays are obtained. Current data allow large CP violation in the h→τ+τ- decay. Consequences of the Cheng-Sher ansatz for the Higgs-Yukawa couplings are discussed in some detail.
Type
journal article