Nuclear modification of high-p_T hadron spectra in p+A collisions at LHC

TL;DR

This paper investigates how multiple parton scatterings and color coherence in high-energy p+A collisions at the LHC modify the spectra of final hadrons, using the HIJING 2.1 model to include various nuclear effects.

Contribution

It introduces a comprehensive study of nuclear modifications in p+A collisions using the HIJING 2.1 model with detailed parton correlations and jet fragmentation effects.

Findings

Nuclear modification affects hadron spectra in p+A collisions.

Partonic flavor content is altered by nuclear effects.

Momentum spectra of final hadrons are modified.

Abstract

Multiple parton scatterings in high-energy p+A collisions involve multi-parton correlation inside the projectile and color coherence of multiple jets which will lead to nuclear modification of final hadron spectra relative to that in p+p collisions. Such modification of final hadron spectra in p+A collisions is studied within HIJING 2.1 model which includes initial parton shadowing, transverse momentum broadening, parton flavor and momentum correlation inside the projectile through flavor and momentum conservation and fragmentation of multiple jets. They are shown to modify the partonic flavor content of final jets and momentum spectra of final hadrons in p+A collisions at the Large Hadron Collider.