TY - JOUR
T1 - Lightest neutralino in extensions of the MSSM
AU - Barger, Vernon
AU - Langacker, Paul
AU - Lee, Hye Sung
N1 - Funding Information:
H.L. thanks K. Matchev and the High Energy Theory Group at University of Florida for hospitality and discussions during a visit. H.L. also thanks D. Morrisey for a useful discussion. This research was supported in part by the US Department of Energy under Grants Nos. DE-FG02-95ER40896 and DOE-EY-76-02-3071, and in part by the Wisconsin Alumni Research Foundation.
PY - 2005/12/8
Y1 - 2005/12/8
N2 - We study neutralino sectors in extensions of the MSSM that dynamically generate the μ-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)μ 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.
AB - We study neutralino sectors in extensions of the MSSM that dynamically generate the μ-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)μ 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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U2 - 10.1016/j.physletb.2005.09.023
DO - 10.1016/j.physletb.2005.09.023
M3 - Article
AN - SCOPUS:27644472728
SN - 0370-2693
VL - 630
SP - 85
EP - 99
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -