Gluino Production in Electron-Positron Annihilation

Abstract

We discuss the pair production of gluinos in electron-positron annihilation at LEP, in a model with soft supersymmetry breaking, allowing for mixing between the squarks. In much of the parameter space of the Minimal Supersymmetric Model (MSSM) the cross section corresponds to a $Z$ branching ratio above $10^{-5}$, even up to $10^{-4}$. A non-observation of gluinos at this level restricts the allowed MSSM parameter space. In particular, it leads to lower bounds on the soft mass parameters in the squark sector.

24 pages LATEX plus 10 pages of figures (not included, available on request). Full postscript version available by anonymous ftp at node VSFYS1.FI.UIB.NO in subdirectory OSLAND, file BERGEN94-10.PS), Bergen Scientific/Technical Report No. 1994-10

References in corpus (5)

• Study of Constrained Minimal Supersymmetry
• Perturbative QCD data are consistent with light gluinos
• Light Gluinos in $Z^0$ Decays?
• Light Gluinos at LEP
• Effects of scalar mixing in ${g}{g} \rightarrow \mbox{Higgs} \rightarrow \ga\ga$

Cited by in corpus (3)

• Gluino Pair Production at Linear e^+e^- Colliders
• Constraints on Light Gluinos from Tevatron Dijet Data
• Light, long-lived and secluded: can gluinos be driven out from LEP1 data ?