arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.10415hep-ph
收藏

自发破缺B-L规范对称性的QCD轴子

QCD Axion From a Spontaneously Broken B-L Gauge Symmetry

Gongjun Choi, Motoo Suzuki, Tsutomu T. Yanagida

摘要:

本文证明了在最小超对称标准模型的一个简单的$B-L$扩展中,可以实现具有良好质量的Peccei-Quinn(PQ)对称性. PQ对称性是$B-L$规范对称性在可重正化水平上的残余。此外,PQ对称性的足够质量被非反常的离散规范$R$ -对称性和小的引力子质量$m_{3/2}\ll 100$ GeV所保持。一个可行的质量范围是$m_{3/2}=\mathcal{O}(1)$ eV,它允许一个高的再加热温度和许多重子生成的情况下,典型的热leptogenesis没有任何天体物理学和宇宙学的问题。这样的轻引力子可能在未来的21厘米谱线观测中得到检验。

英文摘要:

In this paper, we show that the Peccei-Quinn (PQ) symmetry with a good quality can be realized in a simple $B-L$ extension of the minimal supersymmetric standard model. The PQ symmetry is a remnant of the $B-L$ gauge symmetry at the renormalizable level. Besides, the sufficient quality of the PQ symmetry is preserved by a non anomalous discrete gauged $R$-symmetry and a small gravitino mass $m_{3/2}\ll 100$GeV. A viable mass range is $m_{3/2}=\mathcal{O}(1)$eV which allows a high reheating temperature and many baryogenesis scenarios typified by the thermal leptogenesis without any astrophysical and cosmological problems. Such a light gravitino may be tested in the future 21cm line observations.

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。

↑