Gravitational Violation of R Parity and its Cosmological Signatures

Details Gravitational Violation of R Parity and its Cosmological Signatures Gravitational Violation of R Parity and its Cosmological Signatures

1996-08-13

arxiv.org/abs/hep-ph/9608307v1

Phys.Rev.D57:147-151,1998

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, no figures

Scientific paper

10.1103/PhysRevD.57.147

The discrete R-parity ($R_P$) usually imposed on the Supersymmetric (SUSY) models is expected to be broken at least gravitationally. If the neutralino is a dark matter particle its decay channels into positrons, antiprotons and neutrinos are severely constrained from astrophysical observations. These constraints are shown to be violated even for Planck-mass-suppressed dimension-five interactions arising from gravitational effects. We perform a general analysis of gravitationally induced $R_P$ violation and identify two plausible and astrophysically consistent scenarios for achieving the required suppression.

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