期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 5, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2021/05/016
关键词
dark matter theory; dark matter experiments
资金
- Swedish Research Council [2018-05029]
- Swedish Research Council [2018-05029] Funding Source: Swedish Research Council
The research demonstrates that signals in future direct detection experiments can be used to test P- and CP-violation in dark matter-nucleus interactions. For a DM mass of 30 GeV (or higher), around 10 to 300 DM signal events are needed to reject P and CP invariant dark matter-nucleus interactions. Therefore, future direct detection experiments have the potential to reveal P- and CP-violation in DM interactions.
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 dark matternucleus 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.
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