Spontaneous R-Parity Breaking in SUSY Models

Details Spontaneous R-Parity Breaking in SUSY Models Spontaneous R-Parity Breaking in SUSY Models

2009-04-14

arxiv.org/abs/0904.2213v2

Phys.Rev.D80:015004,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, typos corrected, to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.80.015004

We investigate a mechanism for spontaneous R-parity breaking in a class of extensions of the minimal supersymmetric standard model with an extra Abelian gauge symmetry which is a linear combination of B-L and weak hypercharge. Both U(1)_X and R-parity are broken by the vacuum expectation value of the right-handed sneutrinos which is proportional to the soft SUSY masses. In these models the mechanism for spontaneous R-parity violation can be realized even with positive soft masses. In this context one has a realistic mechanism for generating neutrino masses as well as a realistic spectrum. We briefly discuss the possible collider signals which could be used to test the theory, the contributions for proton decay and the possibility of a gravitino as a dark matter candidate.

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