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Low-scale seesaw models versus N-eff

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dc.contributor.author	Hernández Gamazo, Pilar
dc.contributor.author	Kekic, Marija
dc.contributor.author	López Pavón, Jacobo
dc.date.accessioned	2014-07-23T11:36:23Z
dc.date.available	2014-07-23T11:36:23Z
dc.date.issued	2014
dc.identifier.citation	Hernández Gamazo, Pilar Kekic, Marija López Pavón, Jacobo 2014 Low-scale seesaw models versus N-eff Physical Review D 89 7 073009
dc.identifier.uri	http://hdl.handle.net/10550/37291
dc.description.abstract	We consider the contribution of the extra sterile states in generic low-scale seesaw models to extra radiation, parametrized by N-eff. We find that the value of Neff is roughly independent of the seesaw scale within a wide range. We explore the full parameter space in the case of two extra sterile states and find that these models are strongly constrained by cosmological data for any value of the seesaw scale below O(100 MeV).
dc.language.iso	eng
dc.relation.ispartof	Physical Review D, 2014, vol. 89, num. 7, p. 073009
dc.subject	Física
dc.title	Low-scale seesaw models versus N-eff
dc.type	journal article	es_ES
dc.date.updated	2014-07-23T11:36:23Z
dc.identifier.doi	10.1103/PhysRevD.89.073009
dc.identifier.idgrec	097625
dc.rights.accessRights	open access	es_ES