Kaon and pion maximal emission times extraction from the femtoscopy analysis of $5.02A$ TeV LHC collisions within the integrated hydrokinetic model

Abstract

A simple method for the extraction of the times of maximal emission for kaons and pions using the combined fitting of their transverse momentum spectra and the longitudinal interferometry radii dependencies on the pair transverse mass $m_T$ is applied to Pb+Pb collisions at the LHC energy $\sqrt{s_{NN}}=5.02$ TeV. The method is based on the analytical formulas, that were earlier successfully utilized in the studies of Pb+Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV. To test the method, the spectra, radii and particle radiation picture are calculated within the integrated hydrokinetic model (iHKM), that includes all the stages of the matter evolution in high-energy A+A collisions: the system's formation, its thermalization, viscous hydrodynamics evolution, particlization and subsequent hadronic cascade. The model describes and predicts well already published LHC data in "soft physics? kinematic region. Thus, the fitting results for maximal emission times of kaons and pions are compared to the approximate maximal emission time values, estimated based on the emission function plots, obtained in iHKM. The developed simple method is intended for use in experimental analysis of femtoscopy data in relativistic A+A collisions.

arXiv comment17 pages, 10 figures

References in corpus (17)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Femtoscopy in Relativistic Heavy Ion Collisions: Two Decades of Progress
• On freeze-out problem in hydro-kinetic approach to A+A collisions
• Hydro-kinetic approach to relativistic heavy ion collisions
• Kaon femtoscopy in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Femtoscopy correlations of kaons in $Pb+Pb$ collisions at LHC within hydrokinetic model
• On $m_T$ dependence of femtoscopy scales for meson and baryon pairs
• Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model
• Energy dependence of pion interferometry scales in ultra-relativistic heavy ion collisions
• Non-identical particle femtoscopy at sqrt(s_NN)=200 AGeV in hydrodynamics with statistical hadronization
• Evolution of the longitudinal and azimuthal structure of the near-side jet peak in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV
• Bulk observables in the LHC 5.02 TeV Pb+Pb collisions within the integrated HydroKinetic Model
• Hydrodynamic source with continuous emission in Au+Au collisions at $\sqrt{s}=200$ GeV
• Emission source functions in heavy ion collisions
• Description of bulk observables in Au+Au collisions at top RHIC energy in the integrated HydroKinetic Model
• Production of identified and unidentified charged hadrons in Pb--Pb collisions at \sqrt{s_{\rm NN}}~5.02~TeV

Cited by in corpus (3)

• Space-time structure of particle emission and femtoscopy scales in ultrarelativistic heavy-ion collisions
• Identical-particle (pion and kaon) femtoscopy in Pb$-$Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 5.02 TeV with Therminator2 modeled with (3+1)D viscous hydrodynamics
• Extension of the integrated hydrokinetic model to nuclear collision energies relevant for the RHIC Beam-Energy Scan program and the research program at GSI-FAIR