CP -violating dark photon interaction
CP -violating dark photon interaction
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CP破坏暗光子相互作用
DOI：
10.1103/physrevd.101.075016
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发表时间：
2020
影响因子：
5
通讯作者：
Ramsey-Musolf, Michael
中科院分区：
文献类型：
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作者：
Fuyuto, Kaori;He, Xiao-Gang;Li, Gang;Ramsey-Musolf, Michael
我们介绍了一个方案违反（CPV）暗光子相互作用的背景下，非阿贝尔动力学混合。假设一个有效场论，扩展了标准模型（SM）的字段内容与额外的规范玻色子（）和三重标量，我们发现，存在守恒和CPV维5运营商涉及这些新的自由度和SM规范玻色子。前者产生的动力学混合和中性规范玻色子（产生暗光子），而后者诱导的CPV相互作用的暗光子与SM粒子。我们讨论了这些相互作用的实验探针使用搜索永久电偶极矩（EDM）和dijet相关性在高能碰撞。据发现，目前的实验限制的电子EDM给出了最强的限制CPV相互作用。原则上，高能碰撞提供了一个互补的探针，通过方位角相关的两个前标签喷注矢量玻色子融合。在实践中，观察相关的CPV不对称性可能具有挑战性。
We introduce a scenario for-violating (CPV) dark photon interactions in the context of non-Abelian kinetic mixing. Assuming an effective field theory that extends the Standard Model (SM) field content with an additionalgauge boson () and atriplet scalar, we show that there exist both-conserving and CPV dimension five operators involving these new degrees of freedom and the SMgauge bosons. The former yields kinetic mixing between theand the neutralgauge boson (yielding the dark photon), while the latter induces CPV interactions of the dark photon with the SM particles. We discuss experimental probes of these interactions using searches for permanent electric dipole moments (EDMs) and dijet correlations in high-energycollisions. It is found that the experimental limit on the electron EDM currently gives the strongest restriction on the CPV interaction. In principle, high-energycollisions provide a complementary probe through azimuthal angular correlations of the two forward tagging jets in vector boson fusion. In practice, observation of the associated CPV asymmetry is likely to be challenging.