# Measurement of the inclusive-isolated prompt-photon cross section in $p\bar{p}$ collisions using the full CDF data set

## TL;DR

This paper reports a precise measurement of the inclusive isolated prompt-photon production cross section in proton-antiproton collisions at 1.96 TeV, using the full Fermilab Tevatron Run II dataset, and compares results with QCD predictions.

## Contribution

First measurement of the prompt-photon cross section across a wide energy range using the full Tevatron dataset, with detailed comparison to theoretical models.

## Key findings

- Good agreement with next-to-leading order QCD calculations
- Measured cross section spans photon energies from 30 to 500 GeV
- Results provide constraints for QCD models and parton distribution functions

## Abstract

A measurement of the inclusive production cross section of isolated prompt photons in proton-antiproton collisions at center-of-mass energy $\sqrt{s}$=1.96TeV is presented. The results are obtained using the full Run II data sample collected with the Collider Detector at the Fermilab Tevatron, which corresponds to an integrated luminosity of 9.5fb$^{-1}$. The cross section is measured as a function of photon transverse energy, $E_T^{\gamma}$, in the range 30$ < E_T^{\gamma} <$500GeV and in the pseudorapidity region $|\eta^{\gamma}|<$1.0. The results are compared with predictions from parton-shower Monte Carlo models at leading order in quantum chromodynamics (QCD) and from next-to-leading order perturbative QCD calculations. The latter show good agreement with the measured cross section.