Instant preheating mechanism and ultrahigh energy cosmic rays
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/07/2004
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Resumo |
Top-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. |
Formato |
7 |
Identificador |
http://dx.doi.org/10.1103/PhysRevD.70.023003 Physical Review D. College Pk: American Physical Soc, v. 70, n. 2, 7 p., 2004. 0556-2821 http://hdl.handle.net/11449/23532 10.1103/PhysRevD.70.023003 WOS:000223233400006 WOS000223233400006.pdf |
Idioma(s) |
eng |
Publicador |
American Physical Soc |
Relação |
Physical Review D |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |