Toward verification of electroweak baryogenesis by electric dipole moments

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• 作者：Kaori Fuyuto^a ; ^{fuyuto@th.phys.nagoya-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Junji Hisano^b ; ^a ; ^c ; ^{hisano@eken.phys.nagoya-u.ac.jp" class="auth_mail" title="E-mail the corresponding author} ; Eibun Senaha^d ; ^{senaha@ncu.edu.tw" class="auth_mail" title="E-mail the corresponding author}
• 刊名：Physics Letters B
• 出版年：2016
• 出版时间：10 April 2016
• 年：2016
• 卷：755
• 期：Complete
• 页码：491-497
• 全文大小：491 K

文摘

We study general aspects of the CP-violating effects on the baryon asymmetry of the Universe (BAU) and electric dipole moments (EDMs) in models extended by an extra Higgs doublet and a singlet, together with electroweak-interacting fermions. In particular, the emphasis is on the structure of the CP-violating interactions and dependences of the BAU and EDMs on masses of the relevant particles. In a concrete mode, we investigate a relationship between the BAU and the electron EDM for a typical parameter set. As long as the BAU-related CP violation predominantly exists, the electron EDM has a strong power in probing electroweak baryogenesis. However, once a BAU-unrelated CP violation comes into play, the direct correlation between the BAU and electron EDM can be lost. Even in such a case, we point out that verifiability of the scenario still remains with the help of Higgs physics.