Singlet extension of the MSSM as a solution to the small cosmological scale anomalies

Subjects: Physics >> The Physics of Elementary Particles and Fields submitted time 2016-05-09

Wang, Fei Wang, Wenyu Yang, Jin Min Zhou, Sihong

Abstract： In this work we show that the general singlet extension of the minimal supersymmetric standard model (MSSM) can naturally provide a self-interacting singlino dark matter to solve the small cosmological scale anomalies (a large Sommerfeld enhancement factor can also be obtained). However, we find that the NMSSM (the singlet extension of the MSSM with Z(3) symmetry) cannot achieve this due to the restricted parameter space. In our analysis we introduce the concept of symmetric and antisymmetric viscosity cross sections to deal with the nonrelativistic Majorana-fermion dark matter scattering.

Peer Review Status:Awaiting Review

 Hits 1922  Downloads 1056  Comment