R-parity violation assisted thermal leptogenesis in the seesaw mechanism
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R-parity violation assisted thermal leptogenesis in the seesaw mechanism

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R-parity violation assisted thermal leptogenesis in the seesaw mechanism

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dc.contributor.author Farzan, Yasaman
dc.contributor.author Furtado Valle, José Wagner
dc.date.accessioned 2015-09-30T11:31:48Z
dc.date.available 2015-09-30T11:31:48Z
dc.date.issued 2006
dc.identifier.uri http://hdl.handle.net/10550/47486
dc.description.abstract Successful leptogenesis within the simplest type I supersymmetric seesaw mechanism requires the lightest of the three right-handed neutrino supermultiplets to be heavier than ∼109 GeV. Thermal production of such (s)neutrinos requires very high reheating temperatures which result in an overproduction of gravitinos with catastrophic consequences for the evolution of the universe. In this letter, we let R-parity be violated through a λiN^iH^uH^d term in the superpotential, where N^i are right-handed neutrino supermultiplets. We show that in the presence of this term, the produced lepton-antilepton asymmetry can be enhanced. As a result, even for N^1 masses as low as 106 GeV or less, we can obtain the observed baryon asymmetry of the universe without gravitino overproduction.
dc.language.iso eng
dc.relation.ispartof Physical Review Letters, 2006, vol. 96, num. 1, p. 011601
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source Farzan, Yasaman Furtado Valle, José Wagner 2006 R-parity violation assisted thermal leptogenesis in the seesaw mechanism Physical Review Letters 96 1 011601
dc.subject Física
dc.title R-parity violation assisted thermal leptogenesis in the seesaw mechanism
dc.type info:eu-repo/semantics/article
dc.date.updated 2015-09-30T11:31:48Z
dc.identifier.doi http://dx.doi.org/10.1103/PhysRevLett.96.011601
dc.identifier.idgrec 031770

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