Could the next generation of cosmology experiments exclude supergravity?

Details Could the next generation of cosmology experiments exclude supergravity? Could the next generation of cosmology experiments exclude supergravity?

2004-02-18

arxiv.org/abs/hep-ph/0402187v2

Phys.Rev. D69 (2004) 105021

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 5 figures, published version with minor changes, results unchanged

Scientific paper

10.1103/PhysRevD.69.105021

Gravitinos are expected to be produced in any local supersymmetric model. Using their abundance prediction as a function of the reheating energy scale, it is argued that the next generation of Cosmic Microwave Background experiments could exclude supergravity or strongly favor "thermal-like" inflation models if B mode polarized radiation were detected. Galactic cosmic--ray production by evaporating primordial black holes is also investigated as a way of constraining the Hubble mass at the end of inflation. Subsequent limits on the gravitino mass and on the related grand unification parameters are derived.

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