Kinetic freeze-out in central heavy-ion collisions between 7.7 and 2760 GeV per nucleon pair

Melo, Ivan; Tomášik, Boris

doi:10.1088/1361-6471/ab5f03

Cited by 15 publications

(12 citation statements)

References 36 publications

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“…We checked that excluding soft pions from the fit results in a significantly smaller χ 2 /N dof 0.6 and the minimum moves out from the parameter ranges given in table 1. Such discrepancies in the pion spectra are well known and have been observed both in hydrodynamic simulations [39,40,45,46] and blast-wave fits with resonance decays [47,48].…”

Section: Fitted Particle Spectra Of π K Pmentioning

confidence: 79%

Global fluid fits to identified particle transverse momentum spectra from heavy-ion collisions at the Large Hadron Collider

Devetak

Dubla

Floerchinger

et al. 2020

J. High Energ. Phys.

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Transverse momentum spectra of identified particles produced in heavy-ion collisions at the Large Hadron Collider are described with relativistic fluid dynamics. We perform a systematic comparison of experimental data for pions, kaons and protons up to a transverse momentum of 3 GeV/c with calculations using the FluiduM code package to solve the evolution equations of fluid dynamics, the TrENTo model to describe the initial state and the FastReso code to take resonance decays into account. Using data in five centrality classes at the center-of-mass collision energy per nucleon pair √ s NN = 2.76 TeV, we determine systematically the most likely parameters of our theoretical model including the shear and bulk viscosity to entropy ratios, the initialization time, initial density and freeze-out temperature through a global search and quantify their posterior probability. This is facilitated by the very efficient numerical implementation of FluiduM and FastReso. Based on the most likely model parameters we present predictions for the transverse momentum spectra of multi-strange hadrons as well as identified particle spectra from Pb-Pb collisions at √ s NN = 5.02 TeV.

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Section: Fitted Particle Spectra Of π K Pmentioning

confidence: 79%

Global fluid fits to identified particle transverse momentum spectra from heavy-ion collisions at the Large Hadron Collider

Devetak

Dubla

Floerchinger

et al. 2020

J. High Energ. Phys.

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“…2 for different energies as solid lines along with the measured data points (statistical and systematic uncertainties added in quadrature) from STAR and ALICE. The spectra of protons and kaons were published in our paper [17].…”

Section: Resultsmentioning

confidence: 99%

“…Resonances are then let to decay so that in the end we look only at stable hadrons. The calculated chemical potentials as functions of temperature were tabulated [17] and read into DRAGON as input in the simulations.…”

Section: The Modelmentioning

confidence: 99%

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Snapshots of fireballs at freeze-out from heavy-ion collisions at different energies

Melo¹,

Tomášik²

2020

Proceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019)

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“…[82] are on the lower side of our error bands. Recent blast-wave model studies [107,108] take into account the resonance feeddown and the outcoming modifications of the p T spectra. The T kin values calculated in Ref.…”

Section: Iii3 Kinetic Freeze-out Temperature From Yields Of Short-lived Resonancesmentioning

confidence: 99%

Heavy ion collisions and neutron stars : dynamics and thermodynamics of QCD matter

Motornenko¹

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This thesis deals with the phenomenology of QCD matter, its aspects in heavy ion collisions and in neutron stars. The first half of the work focuses on the hadronic phase of QCD matter. One focus is on how the hadronic phase shows itself in heavy ion collisions and how its dynamics can be simulated. The role of hadronic interactions is considered in the context of the lattice QCD data. The second part of this thesis presents a unified approach to QCD matter, the CMF model. The CMF model incorporates many aspects of QCD phenomenology which allows for a consistent description of the hadron-quark transition, making it applicable to the entire QCD phase diagram, i.e., to the cold nuclear matter and to the hot QCD matter. It is shown that a description of both the hot matter created in heavy ion collisions and the cold dense matter in neutron star interiors is possible within one single approach, the CMF model.

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Kinetic freeze-out in central heavy-ion collisions between 7.7 and 2760 GeV per nucleon pair

Cited by 15 publications

References 36 publications

Global fluid fits to identified particle transverse momentum spectra from heavy-ion collisions at the Large Hadron Collider

Global fluid fits to identified particle transverse momentum spectra from heavy-ion collisions at the Large Hadron Collider

Snapshots of fireballs at freeze-out from heavy-ion collisions at different energies

Heavy ion collisions and neutron stars : dynamics and thermodynamics of QCD matter

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