ALICE light-flavor results at intermediate and high pT in p-Pb and Pb-Pb collisions

TL;DR

This paper presents measurements of identified hadron transverse momentum distributions and nuclear modification factors in p-Pb and Pb-Pb collisions, revealing multiplicity-dependent baryon-to-meson enhancements at intermediate pT.

Contribution

It provides new detailed measurements of identified particle spectra and ratios at intermediate and high pT in p-Pb and Pb-Pb collisions, utilizing ALICE's particle identification capabilities.

Findings

Baryon-to-meson ratios show multiplicity-dependent enhancement at intermediate pT.

No significant changes in ratios at larger transverse momenta.

Identified particle ratios in association with high-pT particles and jets are measured.

Abstract

The ALICE experiment has unique capabilities for particle identification at mid rapidity over a wide range of transverse momenta, making it an ideal tool for comprehensive measurements of hadrons such as charged pions, kaons, and protons as well as lambdas, K0s, and phi. The transverse momentum distributions and nuclear modification factors, R_pPb and R_PbPb, of these hadrons measured in p-Pb and Pb-Pb collisions are presented. Baryon-to-meson ratios exhibit a multiplicity-dependent enhancement at intermediate transverse momenta for both p-Pb and Pb-Pb collisions, while no significant dynamics is observed in the ratios at larger transverse momenta. Finally, measurements of identified particle ratios in association with high-pT particles as well as within reconstructed jets are presented.