Lepton flavor violating h→τμ decay induced by leptoquarks
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[1] Universidad Nacional Autónoma de México
Universidad Nacional Autónoma de México
México
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[2] Benemérita Universidad Autónoma de Puebla
Benemérita Universidad Autónoma de Puebla
México
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- Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 67, Nº. 4, 2021, págs. 562-574
- Idioma: inglés
- Enlaces
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Resumen
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 potential evidence for the $h\to\tau\mu$ decay.
