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Article
Report number arXiv:2308.16683 ; CERN-EP-2023-179 ; FERMILAB-PUB-23-563-AD
Title Measurements of π±, K±, p and p¯ spectra in 40Ar+45Sc collisions at 13A to 150A GeV/c
Author(s) NA61/SHINE Collaboration  Mostrar todos os 154 autores
Corporate Author(s) The NA61 collaboration
Publication 2024-04-22
Imprint 27 Jan 2024
Number of pages 66
In: Eur. Phys. J. C 84 (2024) 416
DOI 10.1140/epjc/s10052-024-12602-2 (publication)
Subject category Particle Physics - Experiment ; Nuclear Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; NA61
Free keywords relativistic heavy ion physics ; particle and resonance production ; experimental results ; Ar+Sc collisions, hadron production, CERN SPS, NA61/SHINE
Abstract The NA61/SHINE experiment at the CERN Super Proton Synchrotron studies the onset of deconfinement in strongly interacting matter through a beam energy scan of particle production in collisions of nuclei of varied sizes. This paper presents results on inclusive double-differential spectra, transverse momentum and rapidity distributions and mean multiplicities of π±, K±, p and p¯ produced in 40Ar+45Sc collisions at beam momenta of 13A, 19A, 30A, 40A, 75A and 150A GeV/c. The analysis uses the 10\% most central collisions, where the observed forward energy defines centrality. The energy dependence of the K±/π± ratios as well as of inverse slope parameters of the K± transverse mass distributions are placed in between those found in inelastic p+p and central Pb+Pb collisions. The results obtained here establish a system-size dependence of hadron production properties that so far cannot be explained either within statistical or dynamical models.
Copyright/License Preprint: © 2023-2024 CERN (License: CC-BY-4.0)
Publication: © 2024 CERN (License: CC-BY-4.0), sponsored by SCOAP³



Corresponding record in: Inspire
Email contact: marek.gazdzicki@cern.ch


 Record created 2023-08-23, last modified 2024-12-10


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