Search for the next-to-lightest neutralino

Abstract

We study the inclusive production of the next-to-lightest neutralino chi2, decaying directly, or via slepton, into two leptons and the lightest neutralino. The dilepton invariant mass spectrum in these decays has a characteristic sharp edge near the kinematical upper limit. We propose to exploit this feature as a search strategy for the chi2, and thereby for SUSY. The possibilities to determine neutralinos and slepton masses are also discussed.

Comments: LaTeX, 10 pages, 7 eps figures; submitted to Nuclear Physics B; a more detailed version is available under ftp://cmsdoc.cern.ch/documents/97/note97_065.ps.Z