Search for Supersymmetry and Leptoquark States at FNAL.pdfVIP

Search for Supersymmetry and Leptoquark States at FNAL 4 9 9 1 Sharon Hagopian t c The Florida State University O Department of Physics Tallahassee, Florida U.S.A 0 1 Abstract 3 v Searches have been made for first generation scalar and vector leptoquarks by the DØ collaboration 3 and for second generation scalar leptoquarks by the CDF collaboration. The data sample is from 0 the 1992-93 pp¯ run at √s = 1.8 TeV at the Fermilab Tevatron Collider. Assuming that leptoquarks 0 are pair produced and decay into charged leptons and quarks with branching fraction β , mass limits 0 1 at the 95% Confidence Level (CL) have been obtained. For first generation scalar leptoquarks the 4 lower mass limit is 130 GeV/c2 for β = 1.0 and 116 GeV/c2 for β = 0.5. For first generation 9 vector leptoquarks with κ, the anomalous coupling, of 1.0 and β = 1.0, the lower mass limit is 240 / 2 2 x GeV/c and for κ = 1.0, β = 0.5, the lower mass limit is 240 GeV/c . For κ = 0 and β = 1.0, the 2 2 e lower mass limits is 190 GeV/c and for κ = 0, β = 0.5, the lower mass limit is 185 GeV/c . For - second generation scalar leptoquarks, the mass limits are 133 GeV/c2 for β = 1.0 and 98 GeV/c2 p e for β = 0.5. A search for squarks and gluinos, predicted by Supersymmetric models, was made by