Measurement of the inclusive isolated prompt photon cross section in $p\bar{p}$ collisions at $\sqrt{s}=$1.96~TeV, using the full CDF data sample
Abstract
The measurement of the cross section for the inclusive production of isolated prompt photons in proton-antiproton collisions at $\sqrt{s}$=1.96~TeV is presented. The data set corresponds to an integrated luminosity of 9.5~fb$^{-1}$, collected with the Collider Detector at Fermilab in Run~II. The measurement is performed as a function of the photon transverse energy ($E_T^{\gamma}$) covering the range of 30~GeV$< E_T^{\gamma} <$500~GeV in the pseudorapidity region $|\eta^{\gamma}|<$1.0. To reduce the background coming from the decays of $\pi^0$'s, $\eta$'s and other hadrons, photons are required to be isolated in the calorimeter. The output distributions of an Artificial Neural Network are exploited to estimate the remaining contamination from jets faking isolated photons. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.
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