Generalized 2HDM with wrong-sign lepton Yukawa coupling, in light of $g_{\mu }-2$ and lepton flavor violation at the future LHC

Abstract

To explain the observed muon anomaly and simultaneously evade bounds from lepton flavor violation in the same model parameter space is a long cherished dream. In view of a generalized Two Higgs Doublet Model, with a Yukawa structure as a perturbation of Type-X, we are able to get substantial parameter space satisfying this criteria. We are focusing on a region with "{\bf wrong-sign}" lepton-Yukawa coupling which gives rise to an interesting phenomenological consequences. We found that in the "wrong-sign" region, it is possible to probe the low-mass pseudoscalar in flavor-violating decay mode with considerably better significance compared to the "right-sign" region. Performing a simple cut-based analysis we show that at 14 TeV run of the LHC with $300f{b}^{-1}$ integrated luminosity, part of the model parameter space can be probed with significance $\ge 5\sigma$ which further improves with Artificial Neural Network analysis.

arXiv comment26 Pages, 9 Figures, 4 Tables. Few references are added, draft is revised, version is accepted for publication in European Physical Journal C. arXiv admin note: text overlap with arXiv:2010.03590

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