Adiabatic electroweak baryogenesis driven by an axionlike particle
Adiabatic electroweak baryogenesis driven by an axionlike particle
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由轴子粒子驱动的绝热电弱重子发生
DOI：
10.1103/physrevd.101.035009
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发表时间：
2018
影响因子：
5
通讯作者：
C. Shin
中科院分区：
文献类型：
--
作者：
K. Jeong;T. Jung;C. Shin
类轴子粒子（ALP）为电弱重子形成提供了一个新的方向，因为它的周期性使它能够对衰变常数f不敏感地触发强的一阶相变。对于远高于TeV的$f$， alp诱导的电弱相变近似地用绝热过程来描述，这将我们的电弱重子发生情景与传统的情景区别开。我们发现，在电弱异常的耦合下，ALP可以自然地实现自发电弱重子生成，从而解决$f$在约$10^5$ GeV至$10^7$ GeV范围内的物质-反物质不对称问题。在这样的ALP窗口中，重子发生的CP违背完全不受实验约束，特别是不受最近改进的电子电偶极矩限制。未来对阿尔卑斯山的搜索可以探测我们的场景，同时揭示电弱对称性破缺和重子生成之间的联系。
An axion-like particle (ALP) offers a new direction in electroweak baryogenesis because the periodic nature enables it to trigger a strong first-order phase transition insensitively to the decay constant $f$. For $f$ much above TeV, the ALP-induced electroweak phase transition is approximately described by adiabatic processes, distinguishing our scenario for electroweak baryogenesis from the conventional ones. We show that, coupled to the electroweak anomaly, the ALP can naturally realize spontaneous electroweak baryogenesis to solve the matter-antimatter asymmetry problem for $f$ in the range between about $10^5$ GeV and $10^7$ GeV. In such an ALP window, the $CP$ violation for baryogenesis is totally free from the experimental constraints, especially from the recently improved limit on the electron electric dipole moment. Future searches for ALPs could probe our scenario while revealing the connection between electroweak symmetry breaking and baryogenesis.
影响因子：
64.8
作者：
Andreev, V.;Ang, D. G.;Wu, X.
通讯作者：
Wu, X.