Electroweak baryogenesis with lepton flavor violation
Electroweak baryogenesis with lepton flavor violation
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DOI：
10.1016/j.physletb.2016.09.052
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发表时间：
2016-07
影响因子：
4.4
通讯作者：
C. Chiang;K. Fuyuto;E. Senaha
中科院分区：
文献类型：
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作者：
C. Chiang;K. Fuyuto;E. Senaha
我们研究了具有轻子味破坏的双希格斯二重态模型中电弱重子发生的可能性。通过仔细研究重希格斯玻色子的质谱图，发现了同时满足强一阶电弱相变和介子g−2反常的区域。我们还通过利用μ-τ部门中额外的汤川耦合来估计重子数密度。研究发现，破坏μ-τ味道的耦合和额外的τ耦合可以增强违反CP的源项。在O(1)Yukawa耦合和CP破坏相的情况下，观测到的重子数密度是在对泡壁轮廓的一个宽泛的假设下产生的。
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 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.