posted on 2016-08-02, 00:00authored byK Cheung, WY Keung, PY Tseng
Rare decay modes of the newly discovered standard-model-like Higgs boson h may test the flavor-changing couplings in the leptoquark sector through the process h -> tau(-/+)mu(+/-). Motivated by the recently reported excess in LHC data from the CMS detector, we found that a predicted branching fraction Br (h -> tau(-/+)mu(+/-)) at the level of 1% is possible even though the coupling parameters are subjected to the stringent constraint from the null observation of t -> mu gamma, where the destructive cancellation among amplitudes is achievable by fine-tuning.
Funding
. This
research was supported in part by the Ministry of Science
and Technology (MOST) of Taiwan under Grant No. 102-
2112-M-007-015-MY3 and by the U.S. Department of
Energy under Grant No. DE-FG-02-12ER41811.