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arXiv 1709.01262hep-ph
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ElectroWeak BaryoGenesis通过Top Transport

ElectroWeak BaryoGenesis via Top Transport

George W. -S. Hou

摘要:

我们在两个Higgs偶态模型中研究了顶夸克驱动的电弱重子生成过程,该模型允许改变中性Higgs耦合的味道。把Higgs扇形耦合和附加的顶部Yukawa耦合$ρ_{tt}$看作是$\mathcal{O}$(1),我们自然有一级电弱相变和足够的$CP$破坏来为宇宙重子不对称性提供燃料。即使$ρ_{tt}$消失,换质子耦合$ρ_{tc}$仍然可以实现重子生成。现象学的后果,如$t\to ch$,$τ\to μγ$,电子电偶极矩,$h\toγγ$,和$hhh$耦合进行了讨论。额外标量$H^0$、$A^0$和$H^\pm$的质量都在TeV以下,可以在大型强子对撞机上搜索到。

英文摘要:

We study electroweak baryogenesis driven by the top quark in two Higgs doublet model that allows flavor-changing neutral Higgs couplings. Taking Higgs sector couplings and the additional top Yukawa coupling $ρ_{tt}$ to be $\mathcal{O}$(1), one naturally has first order electroweak phase transition and sufficient $CP$ violation to fuel the cosmic baryon asymmetry. Even if $ρ_{tt}$ vanishes, the favor-changing coupling $ρ_{tc}$ can still achieve baryogenesis. Phenomenological consequences such as $t\to ch$, $τ\to μγ$, electron electric dipole moment, $h\toγγ$, and $hhh$ coupling are discussed. The extra scalars $H^0$, $A^0$ and $H^\pm$ are sub-TeV in mass, and can be searched for at the LHC.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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