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dc.contributor.authorCampos, A. H.
dc.contributor.authorMaia, JMF
dc.contributor.authorRosenfeld, R.
dc.date.accessioned2014-05-20T14:07:00Z
dc.date.available2014-05-20T14:07:00Z
dc.date.issued2004-07-01
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.70.023003
dc.identifier.citationPhysical Review D. College Pk: American Physical Soc, v. 70, n. 2, 7 p., 2004.
dc.identifier.issn0556-2821
dc.identifier.urihttp://hdl.handle.net/11449/23532
dc.description.abstractTop-down models assume that the still unexplained ultrahigh energy cosmic rays (UHECR's) are the decay products of superheavy particles. Such particles may have been produced by one of the post-inflationary reheating mechanisms and may account for a fraction of the cold dark matter. In this paper, we assess the phenomenological applicability of the simplest instant preheating framework not to describe a reheating process, but as a mechanism to generate relic supermassive particles as possible sources of UHECR's. We use cosmic ray flux and cold dark matter observational data to constrain the parameters of the model.en
dc.format.extent7
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review D
dc.sourceWeb of Science
dc.titleInstant preheating mechanism and ultrahigh energy cosmic raysen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmerican Physical Soc
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionConselho Nacl Pesquisa Desenvolvimento COCEX
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.description.affiliationUniv São Paulo, Inst Fis, Dept Fis Nucl, BR-66318 São Paulo, Brazil
dc.description.affiliationConselho Nacl Pesquisa Desenvolvimento COCEX, BR-70750901 Brasilia, DF, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.identifier.doi10.1103/PhysRevD.70.023003
dc.identifier.wosWOS:000223233400006
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt
dc.identifier.fileWOS000223233400006.pdf
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