Relic density of neutralino dark matter in the MSSM with CP violation

We calculate the relic density of dark matter in the MSSM with CP violation. We analyse various scenarios of neutralino annihilation: the cases of a bino, bino-wino and bino-Higgsino LSP, annihilation through Higgs, as well as sfermion coannihilation scenarios. Large phase effects are found, on the...

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Detalles Bibliográficos
Autores principales: Bélanger, G, Boudjema, F, Kraml, Sabine, Pukhov, A E, Semenov, A
Lenguaje:eng
Publicado: 2006
Materias:
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.73.115007
http://cds.cern.ch/record/942767
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author Bélanger, G
Boudjema, F
Kraml, Sabine
Pukhov, A E
Semenov, A
author_facet Bélanger, G
Boudjema, F
Kraml, Sabine
Pukhov, A E
Semenov, A
author_sort Bélanger, G
collection CERN
description We calculate the relic density of dark matter in the MSSM with CP violation. We analyse various scenarios of neutralino annihilation: the cases of a bino, bino-wino and bino-Higgsino LSP, annihilation through Higgs, as well as sfermion coannihilation scenarios. Large phase effects are found, on the one hand due to shifts in the masses, on the other hand due to modifications of the couplings. Taking special care to disentangle the effects in masses and couplings, we demonstrate that the presence of CP phases can have a significant influence on the neutralino relic abundance. Typical variations in \Omega h^2 solely from modifications in the couplings are O(10%-100%), but can reach an order of magnitude in some cases.
id cern-942767
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2006
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spelling cern-9427672019-09-30T06:29:59Zdoi:10.1103/PhysRevD.73.115007http://cds.cern.ch/record/942767engBélanger, GBoudjema, FKraml, SabinePukhov, A ESemenov, ARelic density of neutralino dark matter in the MSSM with CP violationParticle Physics - PhenomenologyWe calculate the relic density of dark matter in the MSSM with CP violation. We analyse various scenarios of neutralino annihilation: the cases of a bino, bino-wino and bino-Higgsino LSP, annihilation through Higgs, as well as sfermion coannihilation scenarios. Large phase effects are found, on the one hand due to shifts in the masses, on the other hand due to modifications of the couplings. Taking special care to disentangle the effects in masses and couplings, we demonstrate that the presence of CP phases can have a significant influence on the neutralino relic abundance. Typical variations in \Omega h^2 solely from modifications in the couplings are O(10%-100%), but can reach an order of magnitude in some cases.hep-ph/0604150CERN-PH-TH-2006-063LAPP-TH-1145oai:cds.cern.ch:9427672006-04-18
spellingShingle Particle Physics - Phenomenology
Bélanger, G
Boudjema, F
Kraml, Sabine
Pukhov, A E
Semenov, A
Relic density of neutralino dark matter in the MSSM with CP violation
title Relic density of neutralino dark matter in the MSSM with CP violation
title_full Relic density of neutralino dark matter in the MSSM with CP violation
title_fullStr Relic density of neutralino dark matter in the MSSM with CP violation
title_full_unstemmed Relic density of neutralino dark matter in the MSSM with CP violation
title_short Relic density of neutralino dark matter in the MSSM with CP violation
title_sort relic density of neutralino dark matter in the mssm with cp violation
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.73.115007
http://cds.cern.ch/record/942767
work_keys_str_mv AT belangerg relicdensityofneutralinodarkmatterinthemssmwithcpviolation
AT boudjemaf relicdensityofneutralinodarkmatterinthemssmwithcpviolation
AT kramlsabine relicdensityofneutralinodarkmatterinthemssmwithcpviolation
AT pukhovae relicdensityofneutralinodarkmatterinthemssmwithcpviolation
AT semenova relicdensityofneutralinodarkmatterinthemssmwithcpviolation

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