Decaying neutralino dark matter in anomalous $U(1)_H$ models

Details Decaying neutralino dark matter in anomalous $U(1)_H$ models Decaying neutralino dark matter in anomalous $U(1)_H$ models

2009-07-03

arxiv.org/abs/0907.0682v3

Phys.Rev.D80:055010,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 3 figures. References added, typos corrected, accepted version in Phys Rev D

Scientific paper

10.1103/PhysRevD.80.055010

In supersymmetric models extended with an anomalous $U(1)_H$ different R-parity violating couplings can yield an unstable neutralino. We show that in this context astrophysical and cosmological constraints on neutralino decaying dark matter forbid bilinear R-parity breaking neutralino decays and lead to a class of purely trilinear R-parity violating scenarios in which the neutralino is stable on cosmological scales. We have found that among the resulting models some of them become suitable to explain the observed anomalies in cosmic-ray electron/positron fluxes.

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