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arXiv 2103.06298hep-phhep-ex
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光子与腔相互作用中的CP破坏研究

Probing CP Violation in Photon Self-Interactions with Cavities

Marco Gorghetto, Gilad Perez, Inbar Savoray, Yotam Soreq

摘要:

本文研究了低能光子自相互作用中的CP破坏。由有效算子$FFF\tilde{F}$介导的这些相互作用,其中($\tilde F$)$F$是(双)电磁场强度,还没有直接实验探测。这种相互作用的可能来源是弱耦合的光标量与光子的标量和赝标量耦合(例如,复杂的希格斯门标量或弛豫),或通过偶极算符耦合到光子的新的光费米子。提出了一种利用超导射频腔和真空双折射实验来分离CP破坏对光子自相互作用的贡献的方法。此外,我们考虑了与上述有效算子相关的新物理尺度上的几个理论和实验间接界限,并提出了对该尺度的拟议实验的敏感性的预测。我们还讨论了这些边界的影响CP违反耦合的新的光粒子耦合到光子。

英文摘要:

In this paper we study CP violation in photon self-interactions at low energy. These interactions, mediated by the effective operator $FFF\tilde{F}$, where ($\tilde F$) $F$ is the (dual) electromagnetic field strength, have yet to be directly probed experimentally. Possible sources for such interactions are weakly coupled light scalars with both scalar and pseudoscalar couplings to photons (for instance, complex Higgs-portal scalars or the relaxion), or new light fermions coupled to photons via dipole operators. We propose a method to isolate the CP-violating contribution to the photon self-interactions using Superconducting Radio-Frequency cavities and vacuum birefringence experiments. In addition, we consider several theoretical and experimental indirect bounds on the scale of new physics associated with the above effective operator, and present projections for the sensitivity of the proposed experiments to this scale. We also discuss the implications of these bounds on the CP-violating couplings of new light particles coupled to photons.

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。

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