论文标题
QCD轴上来自自发损坏的B-l仪表对称性
QCD Axion From a Spontaneously Broken B-L Gauge Symmetry
论文作者
论文摘要
在本文中，我们表明，具有良好质量的Peccei-Quinn（PQ）对称性可以在最小超对称标准模型的简单$ B-L $扩展中实现。 PQ对称性是可恢复级别的$ B-L $量规对称性的残余。此外，PQ对称性的足够质量由非异常的离散测量$ r $ symmetry和一个小的Gravitino Mass $ M_ {3/2} \ ll 100 $ GEV保留。可行的质量范围为$ M_ {3/2} = \ Mathcal {O}（1）$ eV，它允许高温温度和许多由热静脉生成而典型而没有任何天体物理和宇宙学问题的男性生成方案。将来可以在21厘米线观测中测试这样的轻度重力。
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.
