Lepton flavor violating decays of the SM-like Higgs boson $h\to e_i{e}_j$, and $e_i\to e_j\gamma$ in a flipped 3-3-1 model

Abstract

In the framework of the flipped 3-3-1 model introduced recently [1], the lepton-flavor-violating (LFV) decay $\mu \to 3e$ was predicted to have a large branching ratio (Br) close to the recent experimental limit. We will show that the Br of LFV decays of the standard-model-like (SM-like) Higgs boson decays (LFVHD) Br$(h\to e_a{e}_b)$ may also be large. Namely, the Br$(h\to \mu \tau ,e\tau )$ can reach values of $\mathcal{O}(10^{-4})-\mathcal{O}(10^{-5})$, which will reach the upcoming experimental sensitivities. On the other hand, for LFV decays of charged leptons (cLFV) $(e_b\to e_a\gamma )$, the branching ratios are well below experimental bounds.

arXiv commentTypos corrected based on the version published in PTEP. References added

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