Abstract
If one assumes a spontaneously broken local supersymmetry, big-bang cosmology implies that the universe is filled with a gravitino () gas—possibly its dominant constituent. From the observational bound on the cosmological mass density it follows that keV. Correspondingly, the supersymmetry breaking parameter satisfies TeV, requiring new supersymmetric physics in the teraelectronvolt energy region. An exact sum rule is derived and used to estimate the threshold and cross section for the production of the new states.
- Received 17 August 1981
DOI:https://doi.org/10.1103/PhysRevLett.48.223
©1982 American Physical Society