Properties of the Lightest Neutralino in MSSM Extensions

Journal Article · Fri Dec 02 00:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2149717· OSTI ID:20729178

Barger, Vernon ^[1]; Langacker, Paul ^[2]; Lee, Hye-Sung ^[1]

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1. Department of Physics, University of Wisconsin, Madison, WI 53706 (United States)
2. Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, PA 19104 (United States)

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.

• OSTI ID: 20729178
• Journal Information: AIP Conference Proceedings, Vol. 805, Issue 1; Conference: PASCOS 2005: 11. international symposium on particles, strings, and cosmology, Gyeongju (Korea, Republic of), 30 May - 4 Jun 2005; Other Information: DOI: 10.1063/1.2149717; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
DENSITY
FERMILAB TEVATRON
HIGGS BOSONS
HIGGS MODEL
LEP STORAGE RINGS
NONLUMINOUS MATTER
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY