Possible astrophysical signatures of heavy stable neutral relics in supergravity models

Rouzbeh Allahverdi, Kari Enqvist, Anupam Mazumdar

OnderzoeksoutputAcademicpeer review

16 Citaten (Scopus)


We consider heavy stable neutral particles in the context of supergravity and show that a gravitationally suppressed inflaton decay can produce such particles in cosmologically interesting abundances within a wide mass range103GeV<~mX <~1011 GeV. In gravity-mediated supersymmetry breaking models, a heavy particle can decay into its superpartner and a photon-photino pair or a gravitino. Such decays only change the identity of a possible dark matter candidate. However, for 103 GeV<~mx<~107 GeV, astrophysical bounds from a gamma-ray background and photodissociation of light elements can be more stringent than the overclosure bound, thus ruling out the particle as a dark matter candidate.
Originele taal-2English
Aantal pagina's7
TijdschriftPhysical Review D
Nummer van het tijdschrift10
StatusPublished - mei-2002
Extern gepubliceerdJa

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