Abstract
A search has been made with the upgraded UA2 experiment at the CERN p p Collider at s =630 GeV for multi-jet events with large transverse momentum imbalance in a data sample corresponding to an integrated luminosity of 7.4 pb −1. Under the assumption that the photino is the lightest stable supersymmetric (SUSY) particle, the data have been used to deduce lower limits in a minimal SUSY model for the squark ( m q ) and the gluino ( m g ) masses. The 90% CL bounds are m g > 74 GeV independent of m g , m g > 79 GeV independent of m g , and and m> 106 GeV for m q =m q =m .
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