Scientific article
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Measurements of π± , K±, p and \bar{p} spectra in 7Be+9Be collisions at beam momenta from 19A to 150A eV/c with the NA61/SHINE spectrometer at the CERN SPS

ContributorsNA61/SHINE Collaboration
Publication date2023
First online date2023-01-30

The NA61/SHINE experiment at the CERN Super Proton Synchrotron (SPS) studies the onset of deconfinement in hadron matter by a scan of particle production in collisions of nuclei with various sizes at a set of energies covering the SPS energy range. 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 the 20% most central$^7$Be+$^9$Be collisions at beam momenta of 19A, 30A, 40A, 75A and 150A ${\mathrm{Ge} \mathrm{V}}\!/\!c$. 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 close to those found in inelastic p+p reactions. The new results are compared to the world data on p+p and Pb+Pb collisions as well as to predictions of the Epos, Urqmd, Ampt, Phsd and Smash models.

  • Nucleus nucleus: scattering
  • Beryllium
  • Matter: interaction
  • Beam: momentum
  • Mass spectrum: transverse
  • Hadron: matter
  • NA61
  • Transverse momentum: momentum spectrum
  • Pi: multiplicity
  • K: multiplicity
  • P: multiplicity
  • Anti-p: multiplicity
  • Particle: yield
  • Proton synchrotron
  • Energy dependence
  • Deconfinement
  • Spectrometer
  • CERN Lab
  • Rapidity spectrum
  • Slope
  • Experimental results
Citation (ISO format)
NA61/SHINE Collaboration. Measurements of <i>π</i><sup><i>± </i></sup><i>, K</i><sup><i>±</i></sup>, <i>p</i> and <i>\bar{p}</i> spectra in <sup><i>7</i></sup>Be+<sup><i>9</i></sup>Be collisions at beam momenta from 19<i>A </i>to 150<i>A </i>eV/<i>c </i>with the NA61/SHINE spectrometer at the CERN SPS. In: European physical journal. C, Particles and fields, 2023, vol. 83, n° 1, p. 90. doi: 10.1140/epjc/s10052-020-08733-x
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ISSN of the journal1434-6044

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