2004•arXiv (Cornell University)Open access

SuperWIMP Dark Matter in Supergravity with a Gravitino

Jonathan L. Feng, Shufang Su, Fumihiro Takayama

Abstract

We investigate the superWIMP scenario in the framework of supersymmetry, in which the lightest supersymmetric particle is a stable gravitino. We consider slepton, sneutrino or neutralino being the next-lightest supersymmetric particle, and determine what superpartner masses are viable, applying cosmic-microwave background and electromagnetic and hadronic Big-Bang Nucleosythesis constraints.

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Key concepts: Gravitino, Superpartner, Lightest Supersymmetric Particle, Physics, Particle physics, Supergravity, Supersymmetry, Neutralino