Real scalar dark matter : relativistic treatment

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dc.contributor University of Helsinki, Department of Physics en Arcadi, Giorgio Lebedev, Oleg Pokorski, Stefan Toma, Takashi 2019-09-18T11:31:01Z 2019-09-18T11:31:01Z 2019-08-08
dc.identifier.citation Arcadi , G , Lebedev , O , Pokorski , S & Toma , T 2019 , ' Real scalar dark matter : relativistic treatment ' , Journal of High Energy Physics , vol. 2019 , no. 8 , 050 . en
dc.identifier.issn 1029-8479
dc.identifier.other PURE: 126225912
dc.identifier.other PURE UUID: 2aa8e0ff-f355-48c7-9f75-e2d1bd78a7a8
dc.identifier.other RIS: urn:42529EDE44B05076A7604E9E9334D791
dc.identifier.other RIS: Arcadi2019
dc.identifier.other WOS: 000482466800002
dc.description.abstract A stable real scalar provides one of the simplest possibilities to account for dark matter. We consider the regime where its coupling to the Standard Model fields is negligibly small. Due to self-coupling, the scalar field can reach thermal or at least kinetic equilibrium, in which case the system is characterized by its temperature and effective chemical potential. We perform a fully relativistic analysis of dark matter evolution, thermalization conditions and different freeze-out regimes, including the chemical potential effects. To this end, we derive a relativistic Bose-Einstein analog of the Gelmini-Gondolo formula for a thermal averaged cross section. Finally, we perform a comprehensive parameter space analysis to determine regions consistent with observational constraints. Dark matter can be both warm and cold in this model. en
dc.format.extent 26
dc.language.iso eng
dc.relation.ispartof Journal of High Energy Physics
dc.rights en
dc.subject Beyond Standard Model en
dc.subject Cosmology of Theories beyond the SM en
dc.subject 114 Physical sciences en
dc.subject 115 Astronomy, Space science en
dc.title Real scalar dark matter : relativistic treatment en
dc.type Article
dc.description.version Peer reviewed
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion

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