Parton distribution effects in the direct photon production at hadron collisions

TL;DR

This paper investigates how different parton distribution functions influence the differential cross-sections in direct photon production during hadron collisions, highlighting the importance of accurate internal hadron structure modeling.

Contribution

It analyzes the impact of updated parton distribution and fragmentation functions on differential cross-sections at RHIC and LHC energies.

Findings

Updated distribution functions significantly affect cross-section calculations.

Theoretical insights into hadron internal structure are reinforced.

Results aid in refining models for hadron collision experiments.

Abstract

Parton distribution functions are crucial to understand the internal kinematics of hadrons. There are currently a large number of distribution functions on the market, and thanks to today's technology, performing computational analysis of the differential cross-sections has become more accessible. Despite technological advances, accurately accessing to the internal structure of hadrons remains a difficult task from a theoretical point of view. In this work, we analyze the impact on the differential cross-sections when updating the sets of parton distribution and fragmentation functions, for the production of one hadron plus a direct photon at the energy scale of RHIC and LHC experiments.