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(Standard model) universe dominated by the right matter

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(Standard model) universe dominated by the right matter

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.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.rights.uri	info:eu-repo/semantics/openAccess
dc.source	Barenboim Szuchman, Gabriela Alejandra Vives García, Óscar 2009 (Standard model) universe dominated by the right matter Physical Review D 79 3 033007
dc.subject	Física
dc.subject	Astrofísica
dc.title	(Standard model) universe dominated by the right matter
dc.type	info:eu-repo/semantics/article
dc.date.updated	2015-04-28T08:37:37Z
dc.identifier.doi	http://dx.doi.org/10.1103/PhysRevD.79.033007
dc.identifier.idgrec	060030