Some aspects of collisional sources for electroweak baryogenesis

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dc.creatorKainulainen, Kimmo
dc.creatorProkopec, Tomislav
dc.creatorSchmidt, Michael G.
dc.creatorWeinstock, Steffen
dc.date2002-01-25
dc.date2002-01-30
dc.date.accessioned2026-07-07T03:46:22Z
dc.date.available2026-07-07T03:46:22Z
dc.descriptionWe consider the dynamics of fermions with a spatially varying mass which couple to bosons through a Yukawa interaction term and perform a consistent weak coupling truncation of the relevant kinetic equations. We then use a gradient expansion and derive the CP-violating source in the collision term for fermions which appears at first order in gradients. The collisional sources together with the semiclassical force constitute the CP-violating sources relevant for baryogenesis at the electroweak scale. We discuss also the absence of sources at first order in gradients in the scalar equation, and the limitations of the relaxation time approximation.
dc.description12 pages, 4 figures, talk presented by Tomislav Prokopec at COSMO-01, Rovaniemi, Finland, 09/2001 references added, minor changes in sections 5.3 and 6
dc.identifierhttps://arxiv.org/abs/hep-ph/0201245
dc.identifierhttp://arxiv.org/abs/hep-ph/0201245
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/41265
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Theory
dc.subjectNuclear Theory
dc.titleSome aspects of collisional sources for electroweak baryogenesis
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