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

作　　者：Wenyu Wang Jia-Jun Wu Zhao-Hua Xiong Jun Zhao 王雯宇;吴佳骏;熊兆华;赵俊(Institute of Theoretical Physics,College of Applied Science,Beijing University of Technology,Beijing 100124,China;Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]Institute of Theoretical Physics,College of Applied Science,Beijing University of Technology,Beijing 100124,China [2]Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [3]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Physics C》2020年第6期20-25,共6页中国物理C（英文版）

基　　金：Supported by the Natural Science Foundation of China(11775012)。

摘　　要：Using the latest PandaX limits on the light dark matter(DM) with a light mediator, we check their implication on the parameter space of the general singlet extension of MSSM(without Z3 symmetry), which can have a sufficient DM self-interaction to solve the small-scale structure problem. We find that the PandaX limits can tightly constrain the parameter space, depending on the coupling λ between the singlet and doublet Higgs fields. For the singlet extension of MSSM with Z3 symmetry, the so-called NMSSM, we also demonstrate the PandaX constraints on its parameter space, which gives a light DM with the correct relic density but without sufficient self-interaction to solve the small-scale structure problem. We find that in NMSSM, the GeV dark matter with a sub-GeV mediator is tightly constrained.

关 键 词：dark matter SUPERSYMMETRY direct detection small structure 

分 类 号：P145.9[天文地球—天体物理]