Production of singlino dominated neutralinos in extended supersymmetric models

Abstract

Neutralinos with a large singlino component may appear in extended supersymmetric models with additional singlet Higgs fields. Since singlinos do not couple to (s)fermions and gauge bosons, the cross sections for the production of singlino dominated neutralinos are generally small. Within the framework of the Next-to-Minimal Supersymmetric Standard Model (NMSSM) and an E_6 inspired model we study neutralino production e^+ e^- --> neutralino_1 neutralino_2 (neutralino_1,2 neutralino_3) with a singlino dominated neutralino_2 (neutralino_3). It is shown that neutralinos with a singlino contribution up to 99 % can be produced with a cross section larger than 1 fb and may therefore be detected at a high luminosity e^+ e^- linear collider even if they are not the LSP.

12 pages, LaTeX, 3 eps figures; minor modifications in introduction

References in corpus (3)

• Impact of e^+ and e^- Beam Polarization on Chargino and Neutralino Production at a Linear Collider
• Displaced Vertices in Extended Supersymmetric Models
• Alternative Supersymmetric Spectra

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• Distinguishing between MSSM and NMSSM by combined LHC and ILC analyses
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• Supersymmetry Working Group: Summary Report
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• New physics searches at a Linear Collider with polarized beams