Hadroproduction of photons and leptons

Abstract

We calculate the spectrum of lepton pairs produced in hadronic collisions to first order in ${\alpha }_s$ in quantum chromodynamics (QCD). We compare the results with the data and identify further experimental tests. We emphasize that the same QCD graphs which generate the transverse momentum of lepton pairs also yield real photons at high transverse momentum, and calculate the resulting cross sections.