Instant preheating mechanism and ultrahigh energy cosmic rays

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dc.contributor.authorCampos, A. H.
dc.contributor.authorMaia, J. M.F.
dc.contributor.authorRosenfeld, R. [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionSEPN 509
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T20:40:13Z
dc.date.available2022-04-28T20:40:13Z
dc.date.issued2004-07-01
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.description.affiliationInstituto de Física Universidade de São Paulo Departamento de Fisica Nuclear, CP 66318, São Paulo, SP
dc.description.affiliationConselho Natl. de Pesq. e Desenvol. COCEX SEPN 509, Bl. A, Ed. Nazir I, 70750-901 Brasília, DF
dc.description.affiliationInstituto de Fisica Teorica Universidade Estadual Paulista, Rua Pamplona, 145, 01405-900 São Paulo, SP
dc.description.affiliationUnespInstituto de Fisica Teorica Universidade Estadual Paulista, Rua Pamplona, 145, 01405-900 São Paulo, SP
dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.70.023003
dc.identifier.citationPhysical Review D - Particles, Fields, Gravitation and Cosmology, v. 70, n. 2, 2004.
dc.identifier.doi10.1103/PhysRevD.70.023003
dc.identifier.issn0556-2821
dc.identifier.scopus2-s2.0-42749106829
dc.identifier.urihttp://hdl.handle.net/11449/225148
dc.language.isoeng
dc.relation.ispartofPhysical Review D - Particles, Fields, Gravitation and Cosmology
dc.sourceScopus
dc.titleInstant preheating mechanism and ultrahigh energy cosmic raysen
dc.typeArtigo

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