Testing the electroweak phase transition and electroweak baryogenesis at the LHC and a circular electron-positron collider

We study the collider phenomenology of the electroweak phase transition and electroweak baryogenesis in the framework of the effective field theory. Our study shows that the effective theory using the dimension-6 operators can enforce strong first order phase transition and provide sizable CP violat...

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Bibliographic Details
Published in:Physical review. D 2016-05, Vol.93 (10), Article 103515
Main Authors: Huang, Fa Peng, Gu, Pei-Hong, Yin, Peng-Fei, Yu, Zhao-Huan, Zhang, Xinmin
Format: Article
Language:English
Subjects:
Circularity
Cosmology
Field theory
Gravitation
Large Hadron Collider
Operators
Phase transformations
Phenomenology
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Summary:We study the collider phenomenology of the electroweak phase transition and electroweak baryogenesis in the framework of the effective field theory. Our study shows that the effective theory using the dimension-6 operators can enforce strong first order phase transition and provide sizable CP violation to realize a successful electroweak baryogenesis. Such dimension-6 operators can induce interesting Higgs phenomenology that can be verified at colliders such as the LHC and the planning CEPC. We then demonstrate that this effective theory can originate from vectorlike quarks and the triplet Higgs.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.93.103515