Cosmological constraints on some supergravity-induced low-energy electroweak models

Details Cosmological constraints on some supergravity-induced low-energy electroweak models Cosmological constraints on some supergravity-induced low-energy electroweak models

Jan 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986nuphb.264..621g&link_type=abstract

Nuclear Physics B, Volume 264, p. 621-639.

Physics

Nuclear Physics

3

Scientific paper

We present constraints on the parameters for models with gravity-induced supersymmetry breaking, obtained from cosmology. This is done by studying the evolution of the density of the lightest supersymmetric particle appearing in the mass spectrum. Our analysis, specifically done for models proposed by Cremmer, Fayet and Girardello, gives severe constraints on the mass of the neutral higgsinos, whereas those on the zino mass are very sensitive to the assumed value of the critical energy density of the Universe.
Also at Université de Savoie, Chambéry, France.

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