论文标题
在暗物质相互作用中探测P-和CP侵入
Probing P- and CP-violation in dark matter interactions
论文作者
论文摘要
离散的对称性在阐明弱相互作用的结构中起着核心作用，对于暗物质（DM）粒子的相互作用，它们的性质仍然难以捉摸，它们可能同样至关重要。在这项工作中，我们表明，将来的直接检测实验中的信号可用于以模型独立的方式测试DM核相互作用中的P-和CP-Violation。该分析是在最普遍的有效理论中进行的，该理论是由重粒子交换介导的非相关Spin-0 DM核相互作用。假设有理想的氙气检测器，我们计算拒绝P和CP不变的DM核相互作用所需的预期DM信号事件。对于30 GEV（或更高）的DM质量，该数字位于大约10到300 dm信号事件之间，具体取决于P和CP不变性的建模方式。因此，未来的直接检测实验有可能在DM相互作用中揭示P和CP侵略，从而朝着鉴定DM粒子的识别做出了决定性的步骤。
Discrete symmetries played a central role in elucidating the structure of the weak interactions, and they will probably be equally crucial regarding the interactions of the dark matter (DM) particle -- whose nature remains elusive. In this work we show that signals in future direct detection experiments can be used to test, in a model-independent way, for P- and CP-violation in DM-nucleus interactions. The analysis is performed within the most general effective theory for non-relativistic spin-0 DM-nucleus interactions mediated by the exchange of a heavy particle. Assuming an idealised xenon detector, we calculate the expected number of DM signal events required to reject P and CP invariant DM-nucleus interactions. For a DM mass of 30 GeV (or higher), this number lies between about 10 and 300 DM signal events, depending on how P and CP invariance are modeled. Future direct detection experiments, therefore, have the potential to reveal P- and CP-violation in DM interactions, making a decisive step toward the identification of the DM particle.
