Centrality-dependent Lévy HBT analysis in $\sqrt{s_{{}_{\text{NN}}}}=5.02$ TeV PbPb collisions at CMS

Abstract

The measurement of two-particle Bose-Einstein momentum correlation functions are presented using $\sqrt{s_{{}_{\text{NN}}}}=5.02$ TeV PbPb collision data, recorded by the CMS experiment in 2018. The measured correlation functions are discussed in terms of Lévy type source distributions. The Lévy source parameters are extracted as functions of transverse mass and collision centrality. These source parameters include the correlation strength $\lambda$, the Lévy stability index $\alpha$, and the Lévy scale parameter $R$. The source shape, characterized by $\alpha$, is found to be neither Gaussian nor Cauchy. A hydrodynamic-like scaling of $R$ is also observed.

arXiv comment14 pages, 11 figures, proceedings of the 22nd Zimanyi School Winter Workshop on Heavy Ion Physics, Budapest, Hungary, December 5 - 9, 2022, submitted to the MDPI Universe special issue "Zimányi School - Heavy Ion Physics"

References in corpus (15)

• Particle Interferometry for Relativistic Heavy-Ion Collisions
• Bose-Einstein Correlations for Three-Dimensionally Expanding, Cylindrically Symmetric, Finite Systems
• Resolving the HBT Puzzle in Relativistic Heavy Ion Collision
• Bose-Einstein correlations for Levy stable source distributions
• Observation of the critical end point in the phase diagram for hot and dense nuclear matter
• The QCD crossover at zero and non-zero baryon densities from Lattice QCD
• Bose-Einstein Correlations for Systems with Large Halo
• Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{{}_{NN}}}=200$ GeV Au$+$Au collisions
• Indication of quark deconfinement and evidence for a Hubble flow in 130 and 200 GeV Au+Au collisions
• On the formation of Hubble flow in Little Bangs
• Anomalous diffusion of pions at RHIC
• Event-by-event investigation of the two-particle source function in heavy-ion collisions with EPOS
• Bose-Einstein or HBT correlations and the anomalous dimension of QCD
• Expanded empirical formula for Coulomb final state interaction in the presence of Lévy sources
• Coulomb final state interaction in heavy ion collisions for Levy sources

Cited by in corpus (2)

• Coulomb Corrections for Bose-Einstein Correlations from One- And Three-Dimensional Lévy-Type Source Functions
• Lévy walk of pions in heavy-ion collisions