First order electroweak phase transition triggered by the Higgs portal vector dark matter
First order electroweak phase transition triggered by the Higgs portal vector dark matter
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DOI：
10.1103/physrevd.92.015025
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发表时间：
2014-12
影响因子：
5
通讯作者：
W. Chao
中科院分区：
文献类型：
--
作者：
W. Chao
We investigate an extension of the Standard Model (SM) with a U(1)' gauge symmetry, which is spontaneously broken by a complex scalar singlet and where the new gauge boson is a stable dark matter candidate via a Z2 flavor symmetry. The possibility of generating a strongly first order electroweak phase transition (EWPT) needed for the electroweak baryogenesis mechanism in this model is studied using a gauge independent method. Our result shows a considerable parameter space where both successful dark matter phenomenologies and a strongly first order EWPT can be achieved.
