Hadron production in deuteron-gold collisions and nuclear parton distributions

TL;DR

This paper uses LO pQCD to calculate nuclear modification factors and asymmetries in deuteron-gold collisions at 200 GeV, comparing different nuclear PDFs and fragmentation functions to experimental data.

Contribution

It provides a comparative analysis of nuclear modification factors using various nuclear PDFs and fragmentation functions in deuteron-gold collisions.

Findings

EKS, FGS, and HKN nuclear PDFs produce results consistent with experimental data.

Different nuclear PDFs affect the magnitude of nuclear modification factors.

The study enhances understanding of nuclear effects in high-energy collisions.

Abstract

We calculate nuclear modification factors $R_{dAu}$, central-to-peripheral ratios, $R_{CP}$, and pseudorapidity asymmetries $Y_{Asym}$ in deuteron-gold collisions at $\sqrt{s} = 200$ GeV in the framework of leading-order (LO) perturbative Quantum Chromodynamics. We use the Eskola-Kolhinen-Salgado (EKS), the Frankfurt-Guzey-Strikman (FGS) and the Hirai-Kumano-Nagai (HKN) nuclear parton distribution functions and the Albino-Kramer-Kniehl (AKK) fragmentation functions in our calculations. Results are compared to experimental data from the BRAHMS and STAR collaborations.