Open AccessLepton Flavor Violating $h\to\tau\mu$ decay induced by leptoquarks
Author(s) -
M. A. Arroyo-Ureña,
Ricardo Torres Gaitán,
J. H. Montes de,
R. Sánchez-Vélez
Publication year - 2021
Publication title -
revista mexicana de física/revista mexicana de física
Language(s) - English
Resource type - Journals
eISSN - 2683-2224
pISSN - 0035-001X
DOI - 10.31349/revmexfis.67.040801
Subject(s) - leptoquark , physics , particle physics , lepton , muon , proton decay , scalar (mathematics) , physics beyond the standard model , large hadron collider , neutral current , branching fraction , nuclear physics , higgs boson , standard model (mathematical formulation) , omega , boson , neutrino , electron , quantum mechanics , geometry , mathematics , archaeology , gauge (firearms) , history
The flavor changing neutral current decay $h\to\tau\mu$ is studied in a renormalizable scalar leptoquark model with no proton decay. Analytical expressions for the one-loop level contributions of a scalar leptoquark to the decay width of the process $h\to\tau\mu$ are presented. We find a viable model parameter space via the current constraints on the muon ($g-2$), the decay $\tau\to\mu\gamma$, the LHC Higgs boson data and the direct leptoquark searches at the LHC. Then, we evaluate branching ratio of the decay $h\to\tau\mu$induced by leptoquarks; we find that it is of the order of $10^{-8}-10^{-7}$ ($10^{-8}$; $10^{-9}-10^{-8}$)for a scalar leptoquark mass equal to $m_{\Omega_{5/3}}=1$ TeV ($m_{\Omega_{5/3}}=2$; $m_{\Omega_{5/3}}=10$ TeV). Finally, we evaluate the number of events produced at future hadron colliders from both the $h\to\tau\mu$ decay and the potential Standard Model background finding a potentialevidence for the $h\to\tau\mu$ decay.