Real scalar dark matter : relativistic treatment

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dc.contributor University of Helsinki, Department of Physics en
dc.contributor.author Arcadi, Giorgio
dc.contributor.author Lebedev, Oleg
dc.contributor.author Pokorski, Stefan
dc.contributor.author Toma, Takashi
dc.date.accessioned 2019-09-18T11:31:01Z
dc.date.available 2019-09-18T11:31:01Z
dc.date.issued 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 . https://doi.org/10.1007/JHEP08(2019)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.identifier.uri http://hdl.handle.net/10138/305500
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.identifier.doi https://doi.org/10.1007/JHEP08(2019)050
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/publishedVersion
dc.contributor.pbl

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