Relic abundance of light photinos

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

    Research output: Contribution to journalArticlepeer-review


    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 - 1997

    ASJC Scopus subject areas

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


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