Hypermagnetic Baryogenesis

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dc.creatorBamba, Kazuharu
dc.creatorGeng, C. Q.
dc.creatorHo, S. H.
dc.date2007-12-10
dc.date2008-05-25
dc.date.accessioned2026-07-07T11:39:18Z
dc.date.available2026-07-07T11:39:18Z
dc.descriptionWe study a new scenario for baryogenesis due to the spontaneous breaking of the $CPT$ invariance through the interaction between a baryon current and a hypermagnetic helicity. The hypermagnetic helicity (Chern-Simons number) of $U(1)_Y$ provides a $CPT$ violation background for the generation of baryons via sphaleron processes, which protects these baryons from the sphaleron wash-out effect in thermal equilibrium. It is shown that if the present amplitude of the resultant magnetic fields are sufficiently large, for a wide range mass scale (from TeV to the Planck scale), the observational magnitude of the baryon asymmetry of the Universe can be realized.
dc.description8 pages, no figure, accepted in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0712.1523
dc.identifierhttp://arxiv.org/abs/0712.1523
dc.identifierPhys.Lett.B664:154-156,2008
dc.identifierdoi:10.1016/j.physletb.2008.05.027
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/199869
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.titleHypermagnetic Baryogenesis
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