摘要
The BLMSSM is an extension of the minimal supersymmetric standard model(MSSM).Its local gauge group is SU(3)C×SU(2)L×U(1)Y×U(1)B×U(1)L.Supposing the lightest scalar neutrino is a dark matter candidate,we study the relic density and the spin independent cross section of sneutrino scattering off a nucleon.We calculate the numerical results in detail and find a suitable parameter space.The numerical discussion can confine the parameter space and provide a reference for dark matter research.
作者
Ming-Jie Zhang
Shu-Min Zhao
Xing-Xing Dong
Zhong-Jun Yang
Tai-Fu Feng
张明杰;赵树民;董幸幸;杨忠军;冯太傅(Department of Physics,Hebei University,Baoding 071002,China;Key Laboratory of High-precision Computation and Application of Quantum Field Theory of Hebei Province,Baoding 071002,China;Department of Physics,Chongqing University,Chongqing 401331,China)
基金
Supported by National Natural Science Foundation of China(NNSFC)(11535002,11605037,11705045)
Natural Science Foundation of Hebei Province(A2020201002)
the youth top-notch talent support program of the Hebei Province。
