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Leptoquark induced rare decay amplitudes h -> tau(-/+)mu(+/-) and tau -> mu gamma

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journal contribution
posted on 02.08.2016 by K 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.

History

Publisher Statement

This is a copy of an article published in Physical Review D. © 2016 American Physical Society Publications.

Publisher

American Physical Society

Language

en_US

issn

1550-7998

Issue date

01/01/2016

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