Measurements of $$\pi ^\pm $$ π ± , $$K^\pm $$ K ± , p and $$\bar{p}$$ p ¯ spectra in $$^{40}\hbox {Ar+}^{45}\hbox {Sc}$$ 40 Ar+ 45 Sc collisions at 13A to 150A $$\text{ Ge }\hspace{-1.00006pt}\text{ V }\!/\!c$$ Ge V / c

H. Adhikary (Jan Kochanowski University, Kielce, Poland) ; P. Adrich (National Centre for Nuclear Research, Warsaw, Poland) ; K. Allison (University of Colorado, Boulder, USA) ; N. Amin (Karlsruhe Institute of Technology, Karlsruhe, Germany) ; E. Andronov (Affiliated with an Institution Covered by a Cooperation Agreement with CERN, Geneva, Switzerland) ; et al. - Show all 154 authors

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 $$\pi ^\pm $$ π ± , $$K^\pm $$ K ± , p and $$\bar{p}$$ p ¯ produced in $$^{40}\hbox {Ar+}^{45}\hbox {Sc}$$ 40 Ar+ 45 Sc collisions at beam momenta of 13A, 19A, 30A, 40A, 75A and 150A $$\text{ Ge }\hspace{-1.00006pt}\text{ V }\!/\!c$$ Ge V / c . The analysis uses the 10% most central collisions, where the observed forward energy defines centrality. The energy dependence of the $$K^\pm $$ K ± / $$\pi ^\pm $$ π ± ratios as well as of inverse slope parameters of the $$K^\pm $$ K ± transverse mass distributions are placed in between those found in inelastic $$p+p$$ 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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    {
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    {
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        {
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      "surname": "Malakhov", 
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          "value": "University of Wroc\u0142aw, Wroc\u0142aw, Poland", 
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        {
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  "titles": [
    {
      "source": "Springer", 
      "title": "Measurements of  $$\\pi ^\\pm $$  <math> <msup> <mi>\u03c0</mi> <mo>\u00b1</mo> </msup> </math>  ,  $$K^\\pm $$  <math> <msup> <mi>K</mi> <mo>\u00b1</mo> </msup> </math>  , p and  $$\\bar{p}$$  <math> <mover> <mrow> <mi>p</mi> </mrow> <mrow> <mo>\u00af</mo> </mrow> </mover> </math>   spectra in  $$^{40}\\hbox {Ar+}^{45}\\hbox {Sc}$$  <math> <mrow> <msup> <mrow></mrow> <mn>40</mn> </msup> <msup> <mtext>Ar+</mtext> <mn>45</mn> </msup> <mtext>Sc</mtext> </mrow> </math>   collisions at 13A to 150A  $$\\text{ Ge }\\hspace{-1.00006pt}\\text{ V }\\!/\\!c$$  <math> <mrow> <mspace width=\"0.333333em\"></mspace> <mtext>Ge</mtext> <mspace width=\"0.333333em\"></mspace> <mspace width=\"-1.00006pt\"></mspace> <mspace width=\"0.333333em\"></mspace> <mtext>V</mtext> <mspace width=\"0.333333em\"></mspace> <mspace width=\"-0.166667em\"></mspace> <mo>/</mo> <mspace width=\"-0.166667em\"></mspace> <mi>c</mi> </mrow> </math>"
    }
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  "dois": [
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      "value": "10.1140/epjc/s10052-024-12602-2"
    }
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  "publication_info": [
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      "page_end": "54", 
      "journal_title": "European Physical Journal C", 
      "material": "article", 
      "journal_volume": "84", 
      "artid": "s10052-024-12602-2", 
      "year": 2024, 
      "page_start": "1", 
      "journal_issue": "4"
    }
  ], 
  "$schema": "http://repo.scoap3.org/schemas/hep.json", 
  "acquisition_source": {
    "date": "2024-05-23T03:30:46.626435", 
    "source": "Springer", 
    "method": "Springer", 
    "submission_number": "bc1eb2b418b411efa96f6a3e651b8b98"
  }, 
  "page_nr": [
    54
  ], 
  "license": [
    {
      "url": "https://creativecommons.org/licenses//by/4.0", 
      "license": "CC-BY-4.0"
    }
  ], 
  "copyright": [
    {
      "holder": "CERN for the benefit of the NA61/SHINE Collaboration", 
      "year": "2024"
    }
  ], 
  "control_number": "84869", 
  "record_creation_date": "2024-04-22T15:30:14.826938", 
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  "abstracts": [
    {
      "source": "Springer", 
      "value": "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  $$\\pi ^\\pm $$  <math> <msup> <mi>\u03c0</mi> <mo>\u00b1</mo> </msup> </math>  ,  $$K^\\pm $$  <math> <msup> <mi>K</mi> <mo>\u00b1</mo> </msup> </math>  , p and  $$\\bar{p}$$  <math> <mover> <mrow> <mi>p</mi> </mrow> <mrow> <mo>\u00af</mo> </mrow> </mover> </math>   produced in  $$^{40}\\hbox {Ar+}^{45}\\hbox {Sc}$$  <math> <mrow> <msup> <mrow></mrow> <mn>40</mn> </msup> <msup> <mtext>Ar+</mtext> <mn>45</mn> </msup> <mtext>Sc</mtext> </mrow> </math>   collisions at beam momenta of 13A, 19A, 30A, 40A, 75A and 150A  $$\\text{ Ge }\\hspace{-1.00006pt}\\text{ V }\\!/\\!c$$  <math> <mrow> <mspace width=\"0.333333em\"></mspace> <mtext>Ge</mtext> <mspace width=\"0.333333em\"></mspace> <mspace width=\"-1.00006pt\"></mspace> <mspace width=\"0.333333em\"></mspace> <mtext>V</mtext> <mspace width=\"0.333333em\"></mspace> <mspace width=\"-0.166667em\"></mspace> <mo>/</mo> <mspace width=\"-0.166667em\"></mspace> <mi>c</mi> </mrow> </math>  . The analysis uses the 10% most central collisions, where the observed forward energy defines centrality. The energy dependence of the  $$K^\\pm $$  <math> <msup> <mi>K</mi> <mo>\u00b1</mo> </msup> </math>  / $$\\pi ^\\pm $$  <math> <msup> <mi>\u03c0</mi> <mo>\u00b1</mo> </msup> </math>   ratios as well as of inverse slope parameters of the  $$K^\\pm $$  <math> <msup> <mi>K</mi> <mo>\u00b1</mo> </msup> </math>   transverse mass distributions are placed in between those found in inelastic  $$p+p$$  <math> <mrow> <mi>p</mi> <mo>+</mo> <mi>p</mi> </mrow> </math>   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."
    }
  ], 
  "imprints": [
    {
      "date": "2024-04-22", 
      "publisher": "Springer"
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}
Published on:
22 April 2024
Publisher:
Springer
Published in:
European Physical Journal C , Volume 84 (2024)
Issue 4
Pages 1-54
DOI:
https://doi.org/10.1140/epjc/s10052-024-12602-2
Copyrights:
CERN for the benefit of the NA61/SHINE Collaboration
Licence:
CC-BY-4.0

Fulltext files: