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We study the process of associated photon and jet production, p+pbar -->photon + jet + X, using 8.7 fb^-1 of integrated luminosity collected by the D0detector at the Fermilab Tevatron Collider at a center-of-mass energysqrt{s}=1.96 TeV. Photons are reconstructed with rapidity |y^gamma| <1.0 or1.5<|y^{gamma}| < 2.5 and transverse momentum pT^gamma GeV. The highest-p_T jetis required to be in one of four rapidity regions up to |y^{jet}|< 3.2. Foreach rapidity configuration we measure the differential cross sections inpT_gamma separately for events with the same sign (y^{gamma} y^{jet}}>0) andopposite sign (y^{gamma} y^{jet}<=0) of photon and jet rapidities. We comparethe measured triple differential cross sections, d^3 sigma / d pT_gammay^{gamma} y^{jet}, to next-to-leading order (NLO) perturbative QCD calculationsusing different sets of parton distribution functions and to predictions fromthe SHERPA and PYTHIA Monte Carlo event generators. The NLO calculations arefound to be in general agreement with the data, but do not describe allkinematic regions.

Measurement of the differential cross section of photon plus jet production in ppbar collisions at sqrt{s}=1.96 TeV