Cold Dark Matter Candidate in a Class of Supersymmetric Models with an Extra U(1)

Details Cold Dark Matter Candidate in a Class of Supersymmetric Models with an Extra U(1) Cold Dark Matter Candidate in a Class of Supersymmetric Models with an Extra U(1)

1997-05-14

arxiv.org/abs/hep-ph/9705315v1

Phys.Lett. B407 (1997) 12-21

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, LaTex, uses psfig.sty with 3 figures

Scientific paper

10.1016/S0370-2693(97)00747-8

In supersymmetric models whose gauge group includes an additional U(1) factor at the TeV scale, broken by the VEV of an standard model singlet S, the parameter space can accommodate a very light neutralino not ruled out experimentally. This higgsino-like fermion, stable if R-parity is conserved, can make a good cold dark matter candidate. We examine the thermal relic density of this particle and discuss the prospects for its direct detection if it forms part of our galactic halo.

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