Cooper-Frye sampling with short-range repulsion

Abstract

This work incorporates the effect of short-range repulsion between particles into the Cooper-Frye hadron sampling procedure. This is achieved by means of a rejection sampling step, which prohibits any pair of particles from overlapping in the coordinate space, effectively modeling the effect of hard-core repulsion. The new procedure -- called the FIST sampler -- is based on the package Thermal-FIST. It is used here to study the effect of excluded volume on cumulants of the (net-)proton number distribution in central collisions of heavy ions in a broad collision energy range in conjunction with exact global conservation of baryon number, electric charge, and strangeness. The results are compared with earlier calculations based on analytical approximations, quantifying the accuracy of the latter at different collision energies. An additional advantage of the new method over the analytic approaches is that it offers the flexibility provided by event generators, making it straightforwardly extendable to other observables.

arXiv comment14 pages, 11 figures, to be published in Physical Review C

References in corpus (54)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Non-Gaussian fluctuations near the QCD critical point
• Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
• Challenges in QCD matter physics - The Compressed Baryonic Matter experiment at FAIR
• Particle production and equilibrium properties within a new hadron transport approach for heavy-ion collisions
• Multi-system Bayesian constraints on the transport coefficients of QCD matter
• Non-monotonic energy dependence of net-proton number fluctuations
• Clocking hadronization in relativistic heavy ion collisions with balance functions
• Phenomenological constraints on the transport properties of QCD matter with data-driven model averaging
• van der Waals Interactions in Hadron Resonance Gas: From Nuclear Matter to Lattice QCD
• Excluded volume hadron gas model for particle number ratios in A+A collisions
• Estimation of the shear viscosity at finite net-baryon density from A+A collision data at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV
• Therminator: Thermal heavy-Ion generator
• Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state
• Cumulants and Correlation Functions of Net-proton, Proton and Antiproton Multiplicity Distributions in Au+Au Collisions at energies available at the BNL Relativistic Heavy Ion Collider
• Particle Number Fluctuations in Canonical Ensemble
• A collision geometry-based 3D initial condition for relativistic heavy-ion collisions
• Deuteron production from phase-space coalescence in the UrQMD approach
• Repulsive baryonic interactions and lattice QCD observables at imaginary chemical potential
• Relativistic nuclear collisions: Establishing a non-critical baseline for fluctuation measurements
• Acceptance dependence of fluctuation measures near the QCD critical point
• Proton number fluctuations in $\sqrt{s_{NN}}$ = 2.4 GeV Au+Au collisions studied with HADES
• Coupling Relativistic Viscous Hydrodynamics to Boltzmann Descriptions
• Multiplicity Fluctuations in Hadron-Resonance Gas
• Second order cumulants of conserved charge fluctuations revisited I. Vanishing chemical potentials
• Connecting fluctuation measurements in heavy-ion collisions with the grand-canonical susceptibilities
• Hadron Resonance Gas with Repulsive Interactions and Fluctuations of Conserved Charges
• Global baryon number conservation encoded in net-proton fluctuations measured in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Proton number cumulants and correlation functions in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV from hydrodynamics
• Particlization with local event-by-event conservation laws
• Phase transitions and critical behavior in hadronic transport with a relativistic density functional equation of state
• Freezing Out Fluctuations in Hydro+ Near the QCD Critical Point
• Van der Waals Excluded Volume Model of Multicomponent Hadron Gas
• Collision energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton and net-kaon multiplicity distributions in Au+Au collisions
• New scenarios for hard-core interactions in a hadron resonance gas
• Statistical hadronization and hadronic microcanonical ensemble I
• Particlization of an interacting hadron resonance gas with global conservation laws for event-by-event fluctuations in heavy-ion collisions
• Temperature and fluid velocity on the freeze-out surface from $\pi$, $K$, $p$ spectra in pp, p--Pb and Pb--Pb collisions
• Coalescence, the thermal model and multi-fragmentation: The energy and volume dependence of light nuclei production in heavy ion collisions
• Cumulants of multiple conserved charges and global conservation laws
• Effects of local event-by-event conservation laws in ultra-relativistic heavy ion collisions at the particlization
• Particle number fluctuations in nuclear collisions within excluded volume hadron gas model
• Statistical hadronization model for heavy-ion collisions in a few GeV energy regime
• Hadron resonance gas with van der Waals interactions
• Correcting event-by-event fluctuations in heavy-ion collisions for exact global conservation laws with the generalized subensemble acceptance method
• The role of proton-antiproton regeneration in the late stages of heavy-ion collisions
• Repulsive properties of hadrons in lattice QCD data and neutron stars
• Constraining baryon annihilation in the hadronic phase of heavy-ion collisions via event-by-event fluctuations
• Monte Carlo approach to the excluded-volume hadron resonance gas in grand canonical and canonical ensembles
• Ambiguities in the hadro-chemical freeze-out of Au+Au collisions at SIS18 energies and how to resolve them
• Different Realizations of Cooper-Frye Sampling with Conservation Laws
• Thermodynamic approach to proton number fluctuations in baryon-rich heavy-ion matter created at moderate collision energies
• Critical point particle number fluctuations from molecular dynamics

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• The QCD phase diagram and Beam Energy Scan physics: a theory overview
• Phase transition amplification of proton number fluctuations in nuclear collisions from a transport model approach
• Coordinate versus momentum cuts and effects of collective flow on critical fluctuations
• A modular perspective to the jet suppression from a small to large radius in very high transverse momentum jets