Dark baryon from pure Yang-Mills theory and its GW signature from cosmic strings
Dark baryon from pure Yang-Mills theory and its GW signature from cosmic strings
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DOI：
10.1007/jhep09(2023)197
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发表时间：
2023-07
影响因子：
5.4
通讯作者：
Masaki Yamada;Kazuya Yonekura
中科院分区：
文献类型：
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作者：
Masaki Yamada;Kazuya Yonekura
我们指出，SO（2N）纯杨-米尔斯理论提供了一个暗物质（DM）的候选者，而不需要强加任何额外的对称性。DM候选者是一种特殊类型的胶球，我们称之为重子胶球，它是自然稳定的，并由一种新的产生机制产生。在这种情况下，宇宙弦（或宏观色通量管）的相互交换概率非常低，这提供了特征引力波信号来测试我们的模型。特别是，我们的模型可以同时解释DM的丰度和最近报道的脉冲星定时阵列实验（包括NANOGrav）中检测到的引力波信号。
We point out that SO (2N) pure Yang-Mills theory provides a candidate for dark matter (DM) without the explicit need to impose any additional symmetry. The DM candidate is a particular type of glueball, which we refer to as a baryonic glueball, that is naturally stable and produced by a novel production mechanism for a moderately large N. In this case, the intercommutation probability of cosmic strings (or macroscopic color flux tubes) is quite low, which offers characteristic gravitational wave signals to test our model. In particular, our model can simultaneously account for both abundance of DM and the recently reported gravitational wave signals detected in pulsar timing array experiments, including NANOGrav.