Gravitational wave imprint of new symmetry breaking

• 来源期刊: 中国物理C（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: PARTICLES AND FIELDS
• 页码范围: 20-28
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1137/abb4cb

摘要

It is believed that there are more fundamental gauge symmetries beyond those described by the Standard Model of particle physics.The scales of these new gauge symmetries are usually too high to be reachable by particle colliders.Considering that the phase transition (PT) relating to the spontaneous breaking of new gauge symmetries to the electroweak symmetry might be strongly first order,we propose considering the stochastic gravitational waves(GW) arising from this phase transition as an indirect way of detecting these new fundamental gauge symmetries.As an illustration,we explore the possibility of detecting the stochastic GW generated from the PT of B - L in the space-based interferometer detectors.Our study demonstrates that the GW energy spectrum is reachable by the LISA,Tian-qin,Taiji,BBO,and DECIGO experiments only for the case where the spontaneous breaking of B - L is triggered by at least two electroweak singlet scalars.