LIGHT GLUINO AND TEVATRON DIJET ANGULAR-DISTRIBUTIONS

We consider the effects of a light gluino on the dijet angular distrib utions in <p(p)over bar> collisions at root s = 1800 GeV. We show that the slower running of alpha(s) and the production <q(q)over bar>,gg-- >(gg) over tilde do not significantly alter the normalized differentia l cross-sections. On the other hand, single (u) over tilde,(d) over ti lde squark production qg --> (qg) over tilde with subsequent (q) over tilde --> q (g) over tilde results in dijets whose angular distributio ns are dramatically different from that in SM. The CDF data on dijet a ngular distributions with integrated luminosity of 106 pb(-1) exclude (u) over tilde and (d) over tilde squarks in the mass ranges 190 less than or equal to m less than or equal to 650 and 200 less than or equa l to m less than or equal to 630 GeV, respectively. We extend our anal ysis to lower energies and show that in a future experimental analysis for dijet mass below 240 GeV squarks will be observed or ruled out. ( C) 1997 Elsevier Science B.V.