Spontaneous baryogenesis in flat directions

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dc.creatorTakahashi, Fuminobu
dc.creatorYamaguchi, Masahide
dc.date2003-08-18
dc.date2004-04-03
dc.date.accessioned2026-07-07T10:48:50Z
dc.date.available2026-07-07T10:48:50Z
dc.descriptionWe discuss a spontaneous baryogenesis mechanism in flat directions. After identifying the Nambu-Goldstone mode which derivatively couples to the associated $U$(1) current and rotates due to the A-term, we show that spontaneous baryogenesis can be naturally realized in the context of the flat direction. As applications, we discuss two scenarios of baryogenesis in detail. One is baryogenesis in a flat direction with a vanishing $B-L$ charge, especially, with neither baryon nor lepton charge, which was recently proposed by Chiba and the present authors. The other is a baryogenesis scenario compatible with a large lepton asymmetry.
dc.description10 pages, no figure, the version accepted to Phys. Rev. D; a few explanatory comments are added
dc.identifierhttps://arxiv.org/abs/hep-ph/0308173
dc.identifierhttp://arxiv.org/abs/hep-ph/0308173
dc.identifierPhys.Rev.D69:083506,2004
dc.identifierdoi:10.1103/PhysRevD.69.083506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184020
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.titleSpontaneous baryogenesis in flat directions
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