Measurements of $\pi^\pm$, $K^\pm$, $p$ and $\bar{p}$ spectra in $^{40}$Ar+$^{45}$Sc collisions at 13$A$ to 150$A$ GeV/$c$

The NA61/SHINE collaboration
Eur.Phys.J.C 84 (2024) 416, 2024.

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.

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    Rapidity spectrum of negatively charged pions obtained with $h^-$ method in central Ar+Sc collisions at 30$A$ GeV/$c$ The results of...

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    Rapidity spectrum of negatively charged pions obtained with $h^-$ method in central Ar+Sc collisions at 150$A$ GeV/$c$

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    The energy dependence of the inverse slope parameter $T(K^+)$ of $p_T$ spectra at mid-rapidity of positively charged $K$ mesons for...

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    The energy dependence of the inverse slope parameter $T(K^-)$ of $p_T$ spectra at mid-rapidity of negatively charged $K$ mesons for...

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    The energy dependence of the $K^+/\pi^+$ ratio at mid-rapidity for ArSc. The data used for comparison, other than Ar+Sc, are...

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    The energy dependence of the $K^+/\pi^+$ ratio at mid-rapidity for BeBe. The data used for comparison, other than Ar+Sc, are...

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    The energy dependence of the $K^+/\pi^+$ ratio at mid-rapidity for pp. The data used for comparison, other than Ar+Sc, are...

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    The energy dependence of the $K^+/\pi^+$ ratio at mid-rapidity for PbPb. The data used for comparison, other than Ar+Sc, are...

  • Figure 33 K- to pi- for ArSc

    Data for Figure 33, located on page 30.

    10.17182/hepdata.151277.v1/t106

    The energy dependence of the $K^-/\pi^-$ ratio at mid-rapidity for ArSc. The data used for comparison, other than Ar+Sc, are...

  • Figure 33 K- to pi- for BeBe

    Data for Figure 33, located on page 30.

    10.17182/hepdata.151277.v1/t107

    The energy dependence of the $K^-/\pi^-$ ratio at mid-rapidity for BeBe. The data used for comparison, other than Ar+Sc, are...

  • Figure 33 K- to pi- for ppWorld

    Data for Figure 33, located on page 30.

    10.17182/hepdata.151277.v1/t108

    The energy dependence of the $K^-/\pi^-$ ratio at mid-rapidity for ppWorld. The data used for comparison, other than Ar+Sc, are...

  • Figure 33 K- to pi- for pp

    Data for Figure 33, located on page 30.

    10.17182/hepdata.151277.v1/t109

    The energy dependence of the $K^-/\pi^-$ ratio at mid-rapidity for pp. The data used for comparison, other than Ar+Sc, are...

  • Figure 33 K- to pi- for AuAu

    Data for Figure 33, located on page 30.

    10.17182/hepdata.151277.v1/t110

    The energy dependence of the $K^-/\pi^-$ ratio at mid-rapidity for AuAu. The data used for comparison, other than Ar+Sc, are...

  • Figure 33 K- to pi- for PbPb

    Data for Figure 33, located on page 30.

    10.17182/hepdata.151277.v1/t111

    The energy dependence of the $K^-/\pi^-$ ratio at mid-rapidity for PbPb. The data used for comparison, other than Ar+Sc, are...

  • Figure 34 <K+> to <pi+> for ArSc

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t112

    The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for ArSc. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K+> to <pi+> for BeBe

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t113

    The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for BeBe. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K+> to <pi+> for ppWorld

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t114

    The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for ppWorld. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K+> to <pi+> for pp

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t115

    The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for pp. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K+> to <pi+> for AuAu

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t116

    The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for AuAu. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K+> to <pi+> for PbPb

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t117

    The energy dependence of the $\langle K^+\rangle/\langle\pi^+\rangle$ mean multiplicity ratio for PbPb. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K-> to <pi-> for ArSc

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t118

    The energy dependence of the $\langle K^-\rangle/\langle\pi^-\rangle$ mean multiplicity ratio for ArSc. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K-> to <pi-> for BeBe

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t119

    The energy dependence of the $\langle K^-\rangle/\langle\pi^-\rangle$ mean multiplicity ratio for BeBe. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K-> to <pi-> for ppWorld

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t120

    The energy dependence of the $\langle K^-\rangle/\langle\pi^-\rangle$ mean multiplicity ratio for ppWorld. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K-> to <pi-> for pp

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t121

    The energy dependence of the $\langle K^-\rangle/\langle\pi^-\rangle$ mean multiplicity ratio for pp. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K-> to <pi-> for AuAu

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t122

    The energy dependence of the $\langle K^-\rangle/\langle\pi^-\rangle$ mean multiplicity ratio for AuAu. The data used for comparison, other than Ar+Sc,...

  • Figure 34 <K-> to <pi-> for PbPb

    Data for Figure 34, located on page 31.

    10.17182/hepdata.151277.v1/t123

    The energy dependence of the $\langle K^-\rangle/\langle\pi^-\rangle$ mean multiplicity ratio for PbPb. The data used for comparison, other than Ar+Sc,...

  • Figure 35 BeBe at 19

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t124

    Proton rapidity spectra in central Be+Be collisions at $19A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 BeBe at 30

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t125

    Proton rapidity spectra in central Be+Be collisions at $30A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 BeBe at 40

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t126

    Proton rapidity spectra in central Be+Be collisions at $40A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 BeBe at 75

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t127

    Proton rapidity spectra in central Be+Be collisions at $75A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 BeBe at 150

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t128

    Proton rapidity spectra in central Be+Be collisions at $150A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 pp at 20

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t129

    Proton rapidity spectra in inelastic p+p collisions at $20$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 pp at 30

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t130

    Proton rapidity spectra in inelastic p+p collisions at $30$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 pp at 40

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t131

    Proton rapidity spectra in inelastic p+p collisions at $40$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 pp at 75

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t132

    Proton rapidity spectra in inelastic p+p collisions at $75$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 pp at 150

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t133

    Proton rapidity spectra in inelastic p+p collisions at $150$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 PbPb at 20

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t134

    Proton rapidity spectra in central Pb+Pb collisions at $20A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 PbPb at 30

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t135

    Proton rapidity spectra in central Pb+Pb collisions at $30A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 PbPb at 40

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t136

    Proton rapidity spectra in central Pb+Pb collisions at $40A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 PbPb at 80

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t137

    Proton rapidity spectra in central Pb+Pb collisions at $80A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 35 PbPb at 150

    Data for Figure 35, located on page 31.

    10.17182/hepdata.151277.v1/t138

    Proton rapidity spectra in central Pb+Pb collisions at $150A$ GeV/$c$ beam momentum. The data used for comparison, other than Ar+Sc,...

  • Figure 52

    Data for Figure 52, located on page 42.

    10.17182/hepdata.151277.v1/t139

    System size dependence of the $K^+/\pi^+$ ratio at mid-rapidity in $central$ nucleus-nucleus and inelastic $p$+$p$ interactions obtained at beam momenta...

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