Limits on the masses of supersymmetric particles from 1.8-TeVpp¯collisions

Abstract

An analysis of pp¯ collision events at √s =1.8 TeV with jets and large missing transverse energy finds no event with missing transverse energy >40 GeV. This result yields a 90%-C.L. limit on the cross section for one-jet-event production of <0.1 nb for events with the jet in the pseudorapidity range ‖η‖<1.0 and with jet $E_T$>52 GeV. Limits on the masses of squarks and gluinos in a minimal supersymmetry model are also set. At the 90% C.L., $m_{q̃}$>74 GeV and $m_{g̃}$>73 GeV.