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arXiv · 1607.07316

Electroweak Baryogenesis with Lepton Flavor Violation

Cheng-Wei Chiang·Kaori Fuyuto·Eibun Senaha
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Abstract

We investigate the feasibility of electroweak baryogenesis in a two-Higgs doublet model with lepton flavor violation. By scrutinizing the heavy Higgs boson mass spectrum, regions satisfying both strong first-order electroweak phase transition and the muon $g-2$ anomaly are identified. We also estimate the baryon number density by exploiting extra Yukawa couplings in the $μ$-$τ$ sector. It is found that a CP-violating source term can be enhanced by the $μ$-$τ$ flavor-violating coupling together with the extra $τ$ coupling. With $\mathcal{O}(1)$ Yukawa couplings and CP-violating phases, the observed baryon number density is marginally produced under a generous assumption for the bubble wall profile.

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Cheng-Wei Chiang, Kaori Fuyuto, Eibun Senaha. 2016-10-01. Electroweak Baryogenesis with Lepton Flavor Violation. https://doi.org/10.1016/j.physletb.2016.09.052

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