Relic abundance of light photinos

Daniel J.H. Chung, Glennys R. Farrar, Edward W. Kolb

Research output: Contribution to journalArticle


We solve the coupled Boltzmann equation for the system of light photinos interacting with pions and [Formula presented]’s (the gluon-gluino bound state) to determine the relic abundance of light photinos in the light gaugino scenario. Cosmology bounds the ratio [Formula presented] of the [Formula presented] mass to the [Formula presented] mass to be less than about [Formula presented]. We also use a model Lagrangian embodying crossing symmetry between the [Formula presented] and [Formula presented] reactions to identify cosmologically favored regions of [Formula presented] lifetime as a function of [Formula presented] and [Formula presented] masses.

Original languageEnglish (US)
Pages (from-to)6096-6106
Number of pages11
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number10
StatePublished - Jan 1 1997
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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