Gravitational waves from first order electroweak phase transition in models with the U(1)X gauge symmetry

被引：61

作者：

Hashino, Katsuya ^{[1
,2
]}

Kakizaki, Mitsuru ^{[1
]}

Kanemura, Shinya ^{[2
]}

Ko, Pyungwon ^{[3
]}

Matsui, Toshinori ^{[3
]}

机构：

[1] Univ Toyama, Dept Phys, 3190 Gofuku, Toyama 9308555, Japan

[2] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[3] Korea Inst Adv Study, Sch Phys, 85 Hoegiro, Seoul 02455, South Korea

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2018年 / 06期

基金：

新加坡国家研究基金会; 欧盟地平线“2020”;

关键词：

Beyond Standard Model; Gauge Symmetry; Higgs Physics; HIGGS SINGLET EXTENSION; DARK-MATTER; RADIATIVE-CORRECTIONS; FINITE-TEMPERATURE; BARYON ASYMMETRY; BOSON COUPLINGS; STANDARD MODEL; BARYOGENESIS; VIOLATION; PHYSICS;

D O I：

10.1007/JHEP06(2018)088

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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. It is pointed out that the collider bounds on the properties of the discovered Higgs boson exclude a part of parameter space that could otherwise generate detectable GWs. After imposing various constraints on this model, it is shown that GWs produced by multi-step phase transitions are detectable at future space-based interferometers, such as LISA and DECIGO, if the dark photon is heavier than 25 GeV. Furthermore, we discuss the complementarity of dark photon searches or dark matter searches with the GW observations in these models with the dark gauge symmetry.

引用

页数：29

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