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(Standard model) universe dominated by the right matter

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(Standard model) universe dominated by the right matter

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dc.contributor.author Barenboim Szuchman, Gabriela Alejandra
dc.contributor.author Vives García, Óscar
dc.date.accessioned 2015-04-28T08:37:37Z
dc.date.available 2015-04-28T08:37:37Z
dc.date.issued 2009
dc.identifier.citation Barenboim Szuchman, Gabriela Alejandra Vives García, Óscar 2009 (Standard model) universe dominated by the right matter Physical Review D 79 3 033007
dc.identifier.uri http://hdl.handle.net/10550/43459
dc.description.abstract We analyze the phenomenology of a prolonged early epoch of matter domination by an unstable but very long-lived massive particle. This new matter domination era can help to relax some of the requirements on the primordial inflation. Its main effect is the huge entropy production produced by the decays of such a particle that can dilute any possible unwanted relic, as the gravitino in supersymmetric models, and thus relax the constraints on the inflationary reheating temperature. A natural candidate for such a heavy, long-lived particle already present in the standard model of the electroweak interactions would be a heavy right-handed neutrino. In this case, we show that its decays can also generate the observed baryon asymmetry with right-handed neutrino masses well above the bound from gravitino overproduction.
dc.language.iso eng
dc.relation.ispartof Physical Review D, 2009, vol. 79, num. 3, p. 033007
dc.subject Física
dc.subject Astrofísica
dc.title (Standard model) universe dominated by the right matter
dc.type journal article es_ES
dc.date.updated 2015-04-28T08:37:37Z
dc.identifier.doi 10.1103/PhysRevD.79.033007
dc.identifier.idgrec 060030
dc.rights.accessRights open access es_ES

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