arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1801.10344hep-phastro-ph.COhep-ex
收藏

含隐藏光子的GUT中增强的轴子-光子耦合

Enhanced axion-photon coupling in GUT with hidden photon

Ryuji Daido, Fuminobu Takahashi, Norimi Yokozaki

摘要:

我们证明了在具有单个Peccei-Quinn场的简单模型中,如果规范耦合统一是通过超荷和未破缺的U(1)$_H$之间的大动力学混合$χ= {\cal O}(0.1)$来实现的,那么轴子与光子的耦合可以得到增强.关键的观测结果是,U(1)$_H$规范耦合应该相当强,才能引起如此大的动力学混合,导致隐藏物质场对电磁异常的贡献增强。我们发现,相对于具有$E/N = 8/3$的GUT-轴子模型,轴子-光子耦合增强了约10-100倍。

英文摘要:

We show that the axion coupling to photons can be enhanced in simple models with a single Peccei-Quinn field, if the gauge coupling unification is realized by a large kinetic mixing $χ= {\cal O}(0.1)$ between hypercharge and unbroken hidden U(1)$_H$. The key observation is that the U(1)$_H$ gauge coupling should be rather strong to induce such large kinetic mixing, leading to enhanced contributions of hidden matter fields to the electromagnetic anomaly. We find that the axion-photon coupling is enhanced by about a factor of 10-100 with respect to the GUT-axion models with $E/N = 8/3$.

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。

↑