Measurement of the inclusive-isolated prompt-photon cross section in pp collisions using the full CDF data set

摘要

A measurement of the inclusive production cross section of isolated prompt photons in proton-antiprotoncollisions at center-of-mass energy s~(1/2)=1.96 TeV is presented. The results are obtained using the full RunⅡ data sample collected with the Collider Detector at the Fermilab Tevatron, which corresponds to an integrated luminosity of 9.5 fb~(−1). The cross section is measured as a function of photon transverse energy, E_T~γ , in the range 30 < E_T~γ < 500 GeV and in the pseudorapidity region |η~γ| < 1.0. The results are comparedwith predictions from parton-shower Monte Carlo models at leading order in QCD and from next-to-leadingorderperturbative QCD calculations. The latter show good agreement with the measured cross section.