F. Abe et al., SEARCH FOR SQUARKS AND GLUINOS VIA RADIATIVE DECAYS OF NEUTRALINOS INPROTON-ANTIPROTON COLLISIONS AT ROOT-S=1.8 TEV, Physical review letters, 75(4), 1995, pp. 613-617
We have sought evidence for radiative decays of neutralinos produced i
n proton-antiproton collisions at root s = 1.8 TeV. Events containing
two photons plus large missing transverse energy were investigated. Th
e observed event rate and the missing transverse energy distribution o
f the two-photon events are consistent with QCD predictions. Inferred
limits on squark and gluino masses depend on the supersymmetry model p
arameters. The particular choices mu = -40 GeV/c(2) and tan beta = 1.5
lead to 90%-confidence-level asymptotic lower limits of 110 GeV/c(2)
and 140 GeV/c(2) for squarks and gluinos, respectively.