System-size dependence of jet quenching from light to heavy-ion collisions at LHC
Abstract
Single inclusive hadron suppression in high-energy heavy-ion collisions provides a sensitive probe of parton energy loss and jet transport coefficient in quark-gluon plasma (QGP). System size dependence of jet quenching can provide further constraints on the dynamics of jet quenching and parton energy loss. Motivated by recent experiments on light-ion collisions at the Large Hadron Collider (LHC), we perform a systematic study of single-inclusive hadron suppression in O+O, Ne+Ne, Xe+Xe and Pb+Pb collisions at the LHC energies. The calculations are carried out within the next-to-leading-order perturbative QCD model, incorporating the nuclear modified initial-state parton distributions, final-state parton energy loss in the higher-twist approach and the temperature dependence of the jet transport coefficient q̂/T3 from the Bayesian analyses of previous experimental data at the Relativistic Heavy-ion Collider (RHIC) and LHC. Our model calculations can simultaneously describe the measured single-inclusive charged hadron RAA in O+O, Ne+Ne, Xe+Xe and Pb+Pb collisions over a broad range of event centralities and in the minimum-bias events. We further illustrate the system size dependence of jet quenching through the ratio RNeNe/ROO and the modification factors RAA as a function of ⟨ Ncoll ⟩ which follow a common behavior at fixed pT, indicating the formation of QGP even in the smallest collision systems.
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BibTeX
@misc{xie2026systemsize,
title = {{System-size dependence of jet quenching from light to heavy-ion collisions at LHC}},
author = {Man Xie and Xiang-Yu Wu and Han-Zhong Zhang and Xin-Nian Wang},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2609.35321},
eprint = {2609.35321},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.35321},
note = {CC BY-NC-ND 4.0},
}
RIS
TY - UNPB
TI - System-size dependence of jet quenching from light to heavy-ion collisions at LHC
AU - Man Xie
AU - Xiang-Yu Wu
AU - Han-Zhong Zhang
AU - Xin-Nian Wang
PY - 2026
DA - 2026/10/13
PB - arXiv
DO - 10.48550/arxiv.2609.35321
UR - https://arxiv.org/abs/2609.35321
AB - Single inclusive hadron suppression in high-energy heavy-ion collisions provides a sensitive probe of parton energy loss and jet transport coefficient in quark-gluon plasma (QGP). System size dependence of jet quenching can provide further constraints on the dynamics of jet quenching and parton energy loss. Motivated by recent experiments on light-ion collisions at the Large Hadron Collider (LHC), we perform a systematic study of single-inclusive hadron suppression in O+O, Ne+Ne, Xe+Xe and Pb+Pb collisions at the LHC energies. The calculations are carried out within the next-to-leading-order perturbative QCD model, incorporating the nuclear modified initial-state parton distributions, final-state parton energy loss in the higher-twist approach and the temperature dependence of the jet transport coefficient q̂/T^3 from the Bayesian analyses of previous experimental data at the Relativistic Heavy-ion Collider (RHIC) and LHC. Our model calculations can simultaneously describe the measured single-inclusive charged hadron R_AA in O+O, Ne+Ne, Xe+Xe and Pb+Pb collisions over a broad range of event centralities and in the minimum-bias events. We further illustrate the system size dependence of jet quenching through the ratio R_NeNe/R_OO and the modification factors R_AA as a function of ⟨ N_coll ⟩ which follow a common behavior at fixed p_T, indicating the formation of QGP even in the smallest collision systems.
ER -