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Measurements of $\pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ spectra in $^{40}$Ar+$^{45}$Sc collisions at 13$A$ to 150$A$ GeV/$c$
- Source :
- Eur. Phys. J. C 84, 416 (2024)
- Publication Year :
- 2023
-
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 $\pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ produced in $^{40}$Ar+$^{45}$Sc collisions at beam momenta of 13$A$, 19$A$, 30$A$, 40$A$, 75$A$ and 150$A$~\GeVc. The analysis uses the 10\% most central collisions, where the observed forward energy defines centrality. The energy dependence of the $K^\pm$/$\pi^\pm$ ratios as well as of inverse slope parameters of the $K^\pm$ 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 :
- Nuclear Experiment
High Energy Physics - Experiment
Subjects
Details
- Database :
- arXiv
- Journal :
- Eur. Phys. J. C 84, 416 (2024)
- Publication Type :
- Report
- Accession number :
- edsarx.2308.16683
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1140/epjc/s10052-024-12602-2