Production of singlino dominated neutralinos in extended supersymmetric models

Details Production of singlino dominated neutralinos in extended supersymmetric models Production of singlino dominated neutralinos in extended supersymmetric models

2001-11-22

arxiv.org/abs/hep-ph/0111285v2

Phys.Lett. B526 (2002) 370-378

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

10.1016/S0370-2693(01)01499-X

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.

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