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dc.contributor.authorJukkala, Henri
dc.contributor.authorKainulainen, Kimmo
dc.contributor.authorRahkila, Pyry M.
dc.date.accessioned2021-10-04T08:16:16Z
dc.date.available2021-10-04T08:16:16Z
dc.date.issued2021
dc.identifier.citationJukkala, H., Kainulainen, K., & Rahkila, P. M. (2021). Flavour mixing transport theory and resonant leptogenesis. <i>Journal of High Energy Physics</i>, <i>2021</i>(9), Article 119. <a href="https://doi.org/10.1007/jhep09(2021)119" target="_blank">https://doi.org/10.1007/jhep09(2021)119</a>
dc.identifier.otherCONVID_101286907
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/77993
dc.description.abstractWe derive non-equilibrium quantum transport equations for flavour-mixing fermions. We develop the formalism mostly in the context of resonant leptogenesis with two mixing Majorana fermions and one lepton flavour, but our master equations are valid more generally in homogeneous and isotropic systems. We give a hierarchy of quantum kinetic equations, valid at different approximations, that can accommodate helicity and arbitrary mass differences. In the mass-degenerate limit the equations take the familiar form of density matrix equations. We also derive the semiclassical Boltzmann limit of our equations, including the CP-violating source, whose regulator corresponds to the flavour coherence damping rate. Boltzmann equations are accurate and insensitive to the particular form of the regulator in the weakly resonant case ∆m » Γ, but for ∆m ≲ Γ they are qualitatively correct at best, and their accuracy crucially depends on the form of the CP-violating source.en
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofseriesJournal of High Energy Physics
dc.rightsCC BY 4.0
dc.subject.othercosmology of theories beyond the SM
dc.subject.otherCP violation
dc.subject.otherthermal field theory
dc.titleFlavour mixing transport theory and resonant leptogenesis
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202110045051
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.type.coarhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatuspeerReviewed
dc.relation.issn1126-6708
dc.relation.numberinseries9
dc.relation.volume2021
dc.type.versionpublishedVersion
dc.rights.copyright© 2021 the Authors
dc.rights.accesslevelopenAccessfi
dc.subject.ysokosmologia
dc.subject.ysohiukkasfysiikka
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p7160
jyx.subject.urihttp://www.yso.fi/onto/yso/p15576
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1007/jhep09(2021)119
dc.type.okmA1


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