Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p-Pb collisions at √<i>S</i><sub>NN</sub>=8.16 TeV
PHYSICS LETTERS B, cilt.827, 2022 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 827
- Basım Tarihi: 2022
- Doi Numarası: 10.1016/j.physletb.2022.136943
- Dergi Adı: PHYSICS LETTERS B
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, INSPEC, zbMATH, Directory of Open Access Journals
- Yıldız Teknik Üniversitesi Adresli: Hayır
Özet
Neutral pion(pi(0)) and eta meson production cross sections were measured up to unprecedentedly high transverse momenta (p(T)) in p-Pb collisions at root s(NN) = 8.16 TeV. The mesons were reconstructed via their two-photon decay channel in the rapidity interval -1.3 < y < 0.3 in the ranges of 0.4 < p(T) < 200 GeV/cand 1.0 < p(T) < 50 GeV/c, respectively. The respective nuclear modification factor (R-pPb) is presented for p(T) up to of 200 and 30 GeV/c, where the former was achieved by extending the pi(0) measurement in pp collisions at root s = 8 TeV using the merged cluster technique. The values of R-pPb are below unity for p(T) < 10 GeV/c, while they are consistent with unity for p(T) > 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 root s(NN) = 5.02 TeV. (c) 2022 European Organization for Nuclear Research. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP(3).