Imaging Freeze-out Sources and Extracting Strong Interaction Parameters in Relativistic Heavy-Ion Collisions

Abstract

By combining femtoscopic interferometry with an optical deblurring algorithm, we present a novel method to image the source in heavy-ion collisions (HICs) while simultaneously determining the interaction strength between particle pairs. The spatial distribution of the emission source has been reconstructed for protons ($p$) and antiprotons ($\bar{p}$) from the respective $pp$ and $\bar{p}\bar{p}$ correlation functions in Au+Au collisions at $\sqrt{S_{\mathrm{NN}}}=200$ GeV. Within experimental uncertainties, protons and antiprotons share the same freeze-out distribution showing higher density in the center compared to the widely assumed Gaussian shape. The results evidence the matter-antimatter symmetry in coordinate space at the moment of freeze-out before the nucleons are fully randomized in the collisions.

References in corpus (32)

• Lévy walks
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Observation of the antimatter helium-4 nucleus
• Measurement of interaction between antiprotons
• Evidence of quadrupole and octupole deformations in ${}^{96}$Zr+${}^{96}$Zr and ${}^{96}$Ru+${}^{96}$Ru collisions at ultra-relativistic energies
• A proton density bubble in the doubly magic ${}^{34}$Si nucleus
• Imaging Shapes of Atomic Nuclei in High-Energy Nuclear Collisions
• Imaging the initial condition of heavy-ion collisions and nuclear structure across the nuclide chart
• Recent Progress in Two-proton Radioactivity
• Imaging Sources with Fast and Slow Emission Components
• Separating the impact of nuclear skin and nuclear deformation in high-energy isobar collisions
• Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{{}_{NN}}}=200$ GeV Au$+$Au collisions
• CSHINE for studies of HBT correlation in Heavy Ion Reactions
• Comparison of Source Images for protons, ${\pi }^{-}$'s and $\Lambda$'s in 6 AGeV Au+Au collisions
• Imaging Three Dimensional Two-particle Correlations for Heavy-Ion Reaction Studies
• The Emission Order of Hydrogen Isotopes via Correlation Functions in 30 MeV/u Ar+Au Reactions
• Nucleon-nucleon momentum correlation function as a probe of the density distribution of valence neutron in neutron-rich nucleus
• Deblurring for Nuclei: 3D Characteristics of Heavy-Ion Collisions
• Exploring the Nuclear Shape Phase Transition in Ultra-Relativistic ${}^{129}$Xe+${}^{129}$Xe Collisions at the LHC
• Observation of the Antimatter Hypernucleus ${}_{\bar{\Lambda }}^4\overline{H}$
• Strong neutron pairing in core+4n nuclei
• Reconstruction of Bremsstrahlung $\gamma$-rays Spectrum in Heavy Ion Reactions with Richardson-Lucy Algorithm
• Pion interferometry with Lévy-stable sources in $\sqrt{s_{NN}}$ = 200 GeV Au+Au collisions at STAR
• Impact of initial fluctuations and nuclear deformations in isobar collisions
• Chronology of the three-body dissociation of ${}^8$He
• Determining the neutron skin thickness by relativistic semi-isobaric collisions
• Deconstructing experimental decay energy spectra: the ${}^{26}$O case
• Lévy walk of pions in heavy-ion collisions
• Momentum correlation of light nuclei in Au + Au collisions at $\sqrt{s_{NN}}$ = 2.0 $\sim$ 7.7 GeV
• Centrality dependence of Lévy-stable two-pion Bose-Einstein correlations in $\sqrt{s_{{}_{NN}}}=200$ GeV Au$+$Au collisions
• Kaon femtoscopy with Lévy-stable sources from $\sqrt{s_{{}_{\mathrm{NN}}}}=200$ GeV $\mathrm{Au}+\mathrm{Au}$ collisions at RHIC
• Charged Kaon Femtoscopy with Lévy Sources in $\sqrt{s_{\text{NN}}}$ = 200 GeV Au+Au Collisions at PHENIX

Cited by in corpus (4)

• Extract neutron-neutron interaction strength and spatial-temporal dynamics of neutron emission from two-particle correlation function
• Probing the Three-dimension Emission Source and Neutron Skin via $\pi$-$\pi$ Correlations in Heavy-Ion Collisions
• Experimental Study of Bremsstrahlung Gamma Ray Emission and Short-Range Correlations in ${}^{124}$Sn+${}^{124}$Sn Collisions at 25 MeV/u
• Reconstructing rare particle source by femtoscopic correlations