A1 Journal article (refereed)
Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p–Pb collisions at √sNN = 8.16 TeV (2022)


ALICE Collaboration. (2022). Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p–Pb collisions at √sNN = 8.16 TeV. Physics Letters B, 827, Article 136943. https://doi.org/10.1016/j.physletb.2022.136943


JYU authors or editors


Publication details

All authors or editors: ALICE Collaboration

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2022

Volume: 827

Article number: 136943

Publisher: Elsevier BV

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.physletb.2022.136943

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/80043

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2104.03116


Abstract

Neutral pion (π0) and η meson production cross sections were measured up to unprecedentedly high transverse momenta (pT) in p–Pb collisions at √sNN=8.16TeV. The mesons were reconstructed via their two-photon decay channel in the rapidity interval −1.3<0.3 in the ranges of 0.4<200 GeV/c and 1.0<50 GeV/c, respectively. The respective nuclear modification factor (RpPb) is presented for pT up to of 200 and 30 GeV/c, where the former was achieved by extending the π0 measurement in pp collisions at √s=8TeV using the merged cluster technique. The values of RpPb are below unity for pT<10 GeV/c, while they are consistent with unity for pT>10 GeV/c, leaving essentially no room for final state energy loss. The new data provide strong constraints for nuclear parton distribution and fragmentation functions over a broad kinematic range and are compared to model predictions as well as previous results at √sNN=5.02TeV.


Keywords: particle physics; nuclear physics


Contributing organizations


Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 2


Last updated on 2024-03-04 at 18:26