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High Energy Physics - Phenomenology

arXiv:hep-ph/0505142 (hep-ph)
[Submitted on 16 May 2005 (v1), last revised 2 Jun 2005 (this version, v2)]

Title:Relic density of dark matter in the NMSSM

Authors:G.Belanger, F.Boudjema, C.Hugonie, A.Pukhov, A.Semenov
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Abstract: We present a code to compute the relic density of dark matter in the Next-to-Minimal Supersymmetric Standard Model (NMSSM). Dominant corrections to the Higgs masses are calculated with NMHDECAY as well as theoretical and collider constraints. All neutralino annihilation and coannihilation processes are then computed with an extended version of micrOMEGAs, taking into acount higher order corrections to Higgs vertices. We explore the parameter space of the NMSSM and consider in particular the case of a bino LSP, of a mixed bino-higgsino LSP and of a singlino LSP. As compared to the MSSM, neutralino annihilation is often more efficient as it can take place via (additional) Higgs resonances as well as annihilation into light Higgs states. Models with a large singlino component can be compatible with WMAP constraints.
Comments: 25 pages, 8 figures; one reference added and minor change in acknowledgements
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0505142
  (or arXiv:hep-ph/0505142v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0505142
Journal reference: JCAP 0509 (2005) 001
Related DOI: https://doi.org/10.1088/1475-7516/2005/09/001

Submission history

From: Genevieve Belanger [view email]
[v1] Mon, 16 May 2005 19:22:54 UTC (103 KB)
[v2] Thu, 2 Jun 2005 15:27:13 UTC (103 KB)
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