http://arxiv.org/abs/2209.00505
In the E6 inspired $U(1)_N$ extension of the minimal supersymmetric (SUSY) standard model (MSSM) a single discrete $\tilde{Z}^{H}_2$ symmetry permits suppressing rapid proton decay and non-diagonal flavour transitions. If matter parity and $\tilde{Z}^{H}_2$ symmetry are preserved this SUSY model (SE4-6$SSM) may involve two dark matter candidates. In this article we study a new modification of the SE6SSM in which the cold dark matter is composed of gravitino and the lightest neutral exotic fermion. We argue that in this case the dark matter-nucleon scattering cross section can be considerably smaller than the present experimental limit.
R. Nevzorov
Fri, 2 Sep 22
16/62
Comments: 22 pages, 2 figures
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