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arXiv · 1912.12594

PandaX limits on light dark matter with light mediator in the singlet extension of MSSM

Wenyu Wang·Jia-Jun Wu·Zhao-Hua Xiong·Jun Zhao
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Abstract

Using the latest PandaX limits on light dark matter (DM) with light mediator, we check the implication on the parameter space of the general singlet extension of MSSM (without $Z_3$ symmetry), which can have a sizable DM self-interaction to solve the small-scale structure problem. We find that the PandaX limits can stringently constrain such a paramter space, depending on the coupling $\lambda$ between the singlet and doublet Higgs fields. For the singlet extension of MSSM with $Z_3$ symmetry, the so-called NMSSM, we also demonstrate the PandaX constraints on its parameter space which gives a light DM with correct relic density but without sufficient self-interaction to solve the small-scale structure problem. We find that in this NMSSM the GeV dark matter with a sub-GeV mediator has been stringently constrained.

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Wenyu Wang, Jia-Jun Wu, Zhao-Hua Xiong, Jun Zhao. 2019-12-29. PandaX limits on light dark matter with light mediator in the singlet extension of MSSM. https://doi.org/10.1088/1674-1137%2F44%2F6%2F063102

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