Production of neutralinos in superstring-inspired E_6 models

Abstract

We study the neutralino mass spectra and production cross sections at an e^+e^- linear collider in superstring-inspired E_6 models. These models are characterized by the existence of new neutral gauge bosons and singlet Higgs fields which also lead to an extended neutralino sector compared to the Minimal Supersymmetric Standard Model (MSSM) or the Next-To-Minimal Supersymmetric Standard Model (NMSSM). For different E_6 models we develop scenarios with new light exotic neutralinos which may offer important possibilities to distinguish between the models.

7 pages, Latex, including 12 Postscript figures, uses rotating.sty, amssymb.sty; complete psfile also available at ftp://ftp.physik.uni-wuerzburg.de/pub/preprint/1997/WUE-ITP-97-042.ps.gz ; contribution to the proceedings of the "ECFA/DESY Study on Physics and Detectors for the Linear Collider", DESY 97-123E, ed. R. Settles