Properties of the Lightest Neutralino in MSSM Extensions

Details Properties of the Lightest Neutralino in MSSM Extensions Properties of the Lightest Neutralino in MSSM Extensions

2005-09-12

arxiv.org/abs/hep-ph/0509112v2

AIP Conf.Proc.805:306-309,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of PASCOS 2005, held at Gyeongju, Korea, May 30 - June 4, 2005. 4 pages. A typo corrected and a r

Scientific paper

10.1063/1.2149717

We study neutralino sectors in extensions of the MSSM that dynamically generate the mu-term. The extra neutralino states are superpartners of the Higgs singlets and/or additional gauge bosons. The extended models may have distinct lightest neutralino properties which can have important influences on their phenomenology. We consider constraints on the lightest neutralino from LEP, Tevatron, and (g-2)_mu measurements and the relic density of the dark matter. The lightest neutralino can be extremely light and/or dominated by its singlino component, which does not couple directly to SM particles except Higgs doublets.

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