Constraining models with superlight gravitino, scalar and pseudoscalar particles

dc.contributorUniversidade São Judas Tadeu
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:19:55Z
dc.date.accessioned2022-10-05T17:41:38Z
dc.date.available2014-05-27T11:19:55Z
dc.date.available2022-10-05T17:41:38Z
dc.date.created2014-05-27T11:19:55Z
dc.date.issued2000-06-07
dc.identifierModern Physics Letters A, v. 15, n. 17, p. 1099-1106, 2000.
dc.identifier0217-7323
dc.identifierhttp://hdl.handle.net/11449/66179
dc.identifier10.1142/S0217732300001377
dc.identifierWOS:000088423300002
dc.identifier2-s2.0-0034616608
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/3916001
dc.description.abstractIn some supergravity models there are light weakly coupled scalar (S)-and pseudoscalar (P) particles. These particles arise following a superlight gravitino. In these models the decay SIP → γγ exists. We examine constraints on this process considering these photons as responsible by the extragalactic background light. We also consider the amount of SIP particles produced through the fusion of the cosmic background photons and contributing to the effective number of light neutrino species during primordial nucleosynthesis. We obtain bounds on the gravitino mass complementary to the existing ones.
dc.languageeng
dc.relationModern Physics Letters A
dc.relation1.308
dc.relation0,650
dc.rightsAcesso restrito
dc.sourceScopus
dc.subjectgravity
dc.subjectlight
dc.subjectmathematical analysis
dc.subjectmodel
dc.subjectphoton
dc.subjectphysics
dc.subjecttemperature
dc.titleConstraining models with superlight gravitino, scalar and pseudoscalar particles
dc.typeArtigo


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