Two-photon hadroproduction at largepTas a new test of quantum chromodynamics

Large-$p_T$ production of two opposite-side photons in $p-p$ collisions within QCD is studied in the leading-logarithm approximation and beyond. It is shown that it provides a new and interesting test of QCD, particularly when advantage is taken of a special feature of the cross section as a function of the transverse-momentum-sharing variable $x_e$.