arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2008.05111hep-phastro-ph.CO
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引力波的重子和轻子数破坏

Baryon and Lepton Number Violation from Gravitational Waves

Bartosz Fornal, Barmak Shams Es Haghi

摘要:

我们描述了一个独特的引力波签名的一类模型之间的对称性破缺尺度巨大的层次结构。这种不寻常的信号形状是由高尺度宇宙弦和低尺度宇宙相变对随机引力波背景的重叠贡献造成的。我们将这一思想应用到一个简单的模型中,在这个模型中轻子数的大尺度破缺是由中微子的跷跷板机制引起的,而重子数的小尺度破缺则是由观测到的暗物质残余密度所决定的.这种新的特征可以在即将到来的引力波实验中寻找。

英文摘要:

We describe a unique gravitational wave signature for a class of models with a vast hierarchy between the symmetry breaking scales. The unusual shape of the signal is a result of the overlapping contributions to the stochastic gravitational wave background from cosmic strings produced at a high scale and a cosmological phase transition at a low scale. We apply this idea to a simple model with gauged baryon and lepton number, in which the high-scale breaking of lepton number is motivated by the seesaw mechanism for the neutrinos, whereas the low scale of baryon number breaking is required by the observed dark matter relic density. The novel signature can be searched for in upcoming gravitational wave experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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