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- Title
Measurements of π±, K±, p and p¯ spectra in 40Ar+45Sc collisions at 13A to 150A GeV/c.
- Authors
Adhikary, H.; Adrich, P.; Allison, K. K.; Amin, N.; Andronov, E. V.; Antićić, T.; Arsene, I.-C.; Bajda, M.; Balkova, Y.; Baszczyk, M.; Battaglia, D.; Bazgir, A.; Bhosale, S.; Bielewicz, M.; Blondel, A.; Bogomilov, M.; Bondar, Y.; Bostan, N.; Brandin, A.; Bryliński, W.
- 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 40 Ar+ 45 Sc collisions at beam momenta of 13A, 19A, 30A, 40A, 75A and 150A Ge V / 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.
- Subjects
EUROPEAN Organization for Nuclear Research; COLLISIONS (Nuclear physics); STATISTICAL models; HADRONS; MOMENTUM distributions; SYNCHROTRONS; PROTONS
- Publication
European Physical Journal C -- Particles & Fields, 2024, Vol 84, Issue 4, p1
- ISSN
1434-6044
- Publication type
Article
- DOI
10.1140/epjc/s10052-024-12602-2