Speakers
Chun-Khiang Chua
Gwo-Guang Wong
(Chung Yuan Christian University)
Description
We construct a generic model of Majorana fermion dark matter (DM). Starting with two Weyl spinor multiplets $\eta_{1,2}$ having quantum numbers $(I,\mp Y)$ coupled to the standard model (SM) Higgs, six additional Weyl spinor multiplets with $(I\pm 1/2, \pm(Y\pm 1/2))$ are needed in general. It has 13 parameters in total, five mass parameters and eight Yukawa couplings.
The DM sector of the minimal extension of supersymmetric stand model (MSSM) is a special case of the model with $(I,Y)=(1/2,1/2)$.
Therefore, this model can be viewed as an natural extension of the MSSM case. We consider three cases: MSSM-like, reduced, and extended cases. We study the constraints from the observation of dark matter in relic density, the direct search experiments of XENON, LUX and PICO , and the indirect search experiment of Fermi-LAT. From the constraints we find the allowed range of coupling strength and the distribution of main ingredient which compose a DM particle in mass parameter space. These results are compared with each other.
Primary author
Gwo-Guang Wong
(Chung Yuan Christian University)
