SuperWIMP Dark Matter in Supergravity with a Gravitino

Jonathan L. Feng , Shufang Su , Fumihiro Takayama

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classification ✦ hep-ph

keywords gravitinoparticlesupersymmetricsuperwimpapplyingbackgroundbig-bangconsider

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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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SuperWIMP Dark Matter in Supergravity with a Gravitino

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