Warped Leptogenesis with Dirac Neutrino Masses

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dc.creatorGherghetta, Tony
dc.creatorKadota, Kenji
dc.creatorYamaguchi, Masahide
dc.date2007-05-12
dc.date2007-08-02
dc.date.accessioned2026-07-07T10:55:31Z
dc.date.available2026-07-07T10:55:31Z
dc.descriptionWe show how leptogenesis can occur at the TeV scale with neutrinos that possess almost purely Dirac masses and negligible Majorana mass contributions as a consequence of the small wavefunction overlap in a warped fifth dimension. Lepton number violation at the Planck scale is introduced via a Majorana mass term on the Planck brane. Such a Majorana mass operator leads to the small mass splitting of otherwise degenerate Kaluza-Klein excited states on the TeV brane. This tiny mass splitting can compensate for the small Yukawa couplings to give a CP asymmetry large enough to produce the sufficient baryon asymmetry from the decay of the nearly degenerate neutrino Kaluza-Klein states. In this way the standard baryogenesis via leptogenesis scenario can naturally occur at the TeV scale without the need for a high mass scale.
dc.descriptionTypos corrected
dc.identifierhttps://arxiv.org/abs/0705.1749
dc.identifierhttp://arxiv.org/abs/0705.1749
dc.identifierPhys.Rev.D76:023516,2007
dc.identifierdoi:10.1103/PhysRevD.76.023516
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/186103
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleWarped Leptogenesis with Dirac Neutrino Masses
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