Probing strangeness hadronization with event-by-event production of multistrange hadrons

The ALICE collaboration
CERN-EP-2024-151, 2024.

Abstract
This Letter presents the first measurement of event-by-event fluctuations of the net number (difference between the particle and antiparticle multiplicities) of multistrange hadrons $\Xi^-$ and $\overline{\Xi}^+$ and its correlation with the net-kaon number using the data collected by the ALICE Collaboration in pp, p$-$Pb, and Pb$-$Pb collisions at a center-of-mass energy per nucleon pair $\sqrt{s_{\mathrm{NN}}}=5.02\ \mathrm{TeV}$. The statistical hadronization model with a correlation over three units of rapidity between hadrons having the same and opposite strangeness content successfully describes the results. On the other hand, string-fragmentation models that mainly correlate strange hadrons with opposite strange quark content over a small rapidity range fail to describe the data.

  • Net-Xi-net-K Correlation pp

    10.17182/hepdata.155679.v1/t1

    Pearson correlation coefficient between the net-$\Xi$ number and net-K number, $\rho_{\Delta\Xi\Delta\mathrm{K}}$, in pp collisions at $\sqrt{s} = 5.02$ TeV

  • Net-Xi-net-K Correlation p-Pb

    10.17182/hepdata.155679.v1/t2

    Pearson correlation coefficient between the net-$\Xi$ number and net-K number, $\rho_{\Delta\Xi\Delta\mathrm{K}}$, in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV

  • Net-Xi-net-K Correlation Pb-Pb

    10.17182/hepdata.155679.v1/t3

    Pearson correlation coefficient between the net-$\Xi$ number and net-K number, $\rho_{\Delta\Xi\Delta\mathrm{K}}$, in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV

  • Net-Xi cumulant ratio pp

    10.17182/hepdata.155679.v1/t4

    Normalized second-order cumulant of the Net-$\Xi$ number, ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$, in pp collisions at $\sqrt{s} = 5.02$ TeV

  • Net-Xi cumulant ratio p-Pb

    10.17182/hepdata.155679.v1/t5

    Normalized second-order cumulant of the Net-$\Xi$ number, ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$, in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV

  • Net-Xi cumulant ratio Pb-Pb

    10.17182/hepdata.155679.v1/t6

    Normalized second-order cumulant of the Net-$\Xi$ number, ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$, in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 5.02$ TeV

  • Chi square profile

    10.17182/hepdata.155679.v1/t7

    $\chi^2$ profile obtained from the simultaneous comparison of the ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$ and $\rho_{\Delta\Xi\Delta\mathrm{K}}$ measured in Pb-Pb collisions...

  • Covariance matrix net-Xi net-K correlation pp

    10.17182/hepdata.155679.v1/t8

    Covariance matrix of the Pearson correlation coefficient between the net-$\Xi$ number and net-K number, $\rho_{\Delta\Xi\Delta\mathrm{K}}$, in pp collisions at $\sqrt{s_{\mathrm{NN}}}...

  • Covariance matrix net-Xi net-K correlation p-Pb

    10.17182/hepdata.155679.v1/t9

    Covariance matrix of the Pearson correlation coefficient between the net-$\Xi$ number and net-K number, $\rho_{\Delta\Xi\Delta\mathrm{K}}$, in p-Pb collisions at $\sqrt{s_{\mathrm{NN}}}...

  • Covariance matrix net-Xi net-K correlation Pb-Pb

    10.17182/hepdata.155679.v1/t10

    Covariance matrix of the Pearson correlation coefficient between the net-$\Xi$ number and net-K number, $\rho_{\Delta\Xi\Delta\mathrm{K}}$, in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}...

  • Covariance matrix net-Xi cumulant ratio pp

    10.17182/hepdata.155679.v1/t11

    Covariance matrix of the normalized second-order cumulant of the Net-$\Xi$ number, ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$, in pp collisions at...

  • Covariance matrix net-Xi cumulant ratio p-Pb

    10.17182/hepdata.155679.v1/t12

    Covariance matrix of the normalized second-order cumulant of the Net-$\Xi$ number, ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$, in p-Pb collisions at...

  • Covariance matrix net-Xi cumulant ratio Pb-Pb

    10.17182/hepdata.155679.v1/t13

    Covariance matrix of the normalized second-order cumulant of the Net-$\Xi$ number, ${\kappa}_{2}(\overline{\Xi}^{+} - \Xi^{-})/{\kappa}_{1}(\overline{\Xi}^{+} + \Xi^{-})$, in Pb-Pb collisions at...

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