arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1806.02591hep-ph
收藏

轴子电弱重子发生

Axionic Electroweak Baryogenesis

Kwang Sik Jeong, Tae Hyun Jung, Chang Sub Shin

摘要:

一个轴子可以使电弱相变强烈的一阶所需的电弱重子,即使它是弱耦合到希格斯部门。这主要是因为轴子周期性自然地允许相变的结构对决定轴子相互作用强度的轴子衰减常数不敏感。此外,如果我们引入一个有效的轴子耦合到顶夸克汤川算子,轴子可以作为一个CP相位相关的电弱重子生成。然后,对于约TeV和$10$ ~TeV的$f$,可以解释观察到的重子不对称性,同时避免目前的实验限制。在未来的轻子对撞机和束流收集器实验中,将有可能探测重子生成的轴子窗口。

英文摘要:

An axion can make the electroweak phase transition strongly first-order as required for electroweak baryogenesis even if it is weakly coupled to the Higgs sector. This is essentially because the axion periodicity naturally allows the structure of phase transition to be insensitive to the axion decay constant that determines the strength of axion interactions. Furthermore, the axion can serve as a CP phase relevant to electroweak baryogenesis if one introduces an effective axion coupling to the top quark Yukawa operator. Then, for $f$ between about TeV and order $10$~TeV, the observed baryon asymmetry can be explained while avoiding current experimental constraints. It will be possible to probe the axion window for baryogenesis in future lepton colliders and beam-dump 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。

↑