Single photon data in pp interactions (UA6) are in agreement with the next-to leading order QCD calculations using a "soft" gluon structure function (Duke Owens set I). Similar conclusions have been reached in pp, rr-p, IT+p rr+p collisions by NA24 and WA70, excluding the Duke-owens Duke-Dwens set 11 II structure structure functions. functions. The WA70 and NA24 experiments have observed a 6 standard deviation and a 2.5 standard deviation signal, respectively, for the production of rr-p 11X rr-p llX at high Pr. PT' The measured cross-sections agree with Bll QCD predictions. The WA70...

In recent years the Standard Model of electroweak interactions has successfully passed a number of crucial tests, most notably in neutral current reactions and through the observation of W- and Z-bosons in proton-antiproton collisions. How ever, experiments are only beginning to verify one of the most basic consequences of its theoretical formulation as a local quantum field theory: quantum corrections as calculated in perturbation theory. Measurements that will be carried out at electron positron colliders at Stanford and CERN in the very near future will improve the accuracy by more than an...