Dataset

GSI-2023-00191

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p-Pb collisions at $\sqrt{s_{NN}}$ = 8.16 TeV

ALICE Collaboration (Corresponding author)

2022

Please use a persistent id in citations: doi:10.17182/HEPDATA.128138

Abstract: CERN-LHC. Neutral pion (π$^0$) and η meson production cross sections were measured up to unprecedentedly high transverse momenta (p$_T$) in p–Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16TeV. 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/c and 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 π$^0$ measurement in pp collisions at $\sqrt{s}$ = 8TeV 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 $\sqrt{s_{\rm NN}}$ = 5.02TeV.

Note: Journal Article GSI record: GSI-2023-00137

---

Contributing Institute(s):

1. ALICE (ALI)
2. Detektorlabor (DTL)
3. IT (CIT)
4. ExtreMe Matter Institute, EMMI (EXM)
5. Collaboration CERN: ALICE (ALICE@CERN)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. HGS-HIRe - HGS-HIRe for FAIR (HGS-HIRe) (HGS-HIRe)
3. SUC-GSI-Heidelberg - Strategic university cooperation GSI-U Heidelberg (SUC-GSI-HE) (SUC-GSI-HE)
4. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
5. SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)

Experiment(s):

1. LHC: ALICE

Appears in the scientific report 2022

---

---

Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Acharya, S. ; Adamova, D. ; Adler, A. ; et al
Nuclear modification factor of light neutral-meson spectra up to high transverse momentum in p–Pb collisions at $\sqrt{s_{\rm NN}}$ = 8.16 TeV
Physics letters / B 827, 136943 (2022) [10.1016/j.physletb.2022.136943]2022   Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

---