Gravitational waves from first order electroweak phase transition in models with the $U(1)_X^{}$ gauge symmetry

29 Jun 2018 Hashino Katsuya Kakizaki Mitsuru Kanemura Shinya Ko Pyungwon Matsui Toshinori

We consider a standard model extension equipped with a dark sector where the $U(1)_X^{}$ Abelian gauge symmetry is spontaneously broken by the dark Higgs mechanism. In this framework, we investigate patterns of the electroweak phase transition as well as those of the dark phase transition, and examine detectability of gravitational waves (GWs) generated by such strongly first order phase transition... (read more)

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