Proton Decay with a Light Gravitino or Axino

Details Proton Decay with a Light Gravitino or Axino Proton Decay with a Light Gravitino or Axino

1996-11-09

arxiv.org/abs/hep-ph/9611285v1

Phys.Rev.D55:3924-3926,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, RevTex

Scientific paper

10.1103/PhysRevD.55.3924

We consider the proton decay in supersymmetric models with a gravitino or axino lighter than the proton. This consideration leads to a stringent limit on the R parity and B violating Yukawa coupling of the superpotential operator U^c_i D^c_j D^c_k as $\lambda"_{112} < 10^{-15} (m_{3/2}/eV)$ for a light gravitino, and $\lambda"_{112} < 10^{-15} (F_a/ 10^{10} GeV)$ for a light DFSZ axino. For hadronic axino, the constraint is weakened by the factor of 10^{3}.

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