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Standard Model CP-violation and Baryon Asymmetry. Part 2: Finite temperature

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Standard Model CP-violation and Baryon Asymmetry. Part 2: Finite temperature

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dc.contributor.author	Gavela, María Belén
dc.contributor.author	Hernández Gamazo, Pilar
dc.contributor.author	Orloff, Jean
dc.contributor.author	Pène, Olivier
dc.contributor.author	Quimbay Herrera, Carlos
dc.date.accessioned	2015-04-23T12:09:46Z
dc.date.available	2015-04-23T12:09:46Z
dc.date.issued	1994
dc.identifier.citation	Gavela, María Belén Hernández Gamazo, Pilar Orloff, Jean Pène, Olivier Quimbay Herrera, Carlos 1994 Standard Model CP-violation and Baryon Asymmetry. Part 2: Finite temperature Nuclear Physics B 430 382 426
dc.identifier.uri	http://hdl.handle.net/10550/43330
dc.description.abstract	We consider the scattering of quasi-particles off the boundary created during a first order electroweak phase transition. Spatial coherence is lost due to the quasi-quark damping rate, and we show that reflection on the boundary is suppressed, even at tree-level. Simply on CP considerations, we argue against electroweak baryogenesis in the Standard Model via the charge transport mechanism. A CP asymmetry is produced in the reflection properties of quarks and antiquarks hitting the phase boundary. An effect is present at order α2W in rate and a regular GIM behaviour is found, which can be expressed in terms of two unitarity triangles. A crucial role is played by the damping rate of quasi-particles in a hot plasma, which is a relevant scale together with MW and the temperature. The effect is many orders of magnitude below what observation requires.
dc.language.iso	eng
dc.relation.ispartof	Nuclear Physics B, 1994, vol. 430, p. 382-426
dc.subject	Física
dc.title	Standard Model CP-violation and Baryon Asymmetry. Part 2: Finite temperature
dc.type	journal article	es_ES
dc.date.updated	2015-04-23T12:09:47Z
dc.identifier.doi	10.1016/0550-3213(94)00410-2
dc.identifier.idgrec	081423
dc.rights.accessRights	open access	es_ES