Femtoscopy scales and particle production in the relativistic heavy ion collisions from Au+Au at 200 AGeV to Xe+Xe at 5.44 ATeV within the integrated hydrokinetic model

Shapoval, V. М.; Adzhymambetov, M. D.; Sinyukov, Yu. M.

doi:10.1140/epja/s10050-020-00266-x

Cited by 4 publications

(4 citation statements)

References 77 publications

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“…As was already mentioned, the analysis of relativistic heavy-ion collisions for this work was carried out based on the results of computer simulations within the integrated hydrokinetic model (iHKM) [52,60,66,67]. The model successfully reproduces the experimental data on bulk hadronic observables (including femtoscopy radii) for the high-energy collisions at the LHC and RHIC [52,58,63,68].…”

Section: Methodsmentioning

confidence: 91%

“…One of the most-important distinct features of the iHKM, as compared to other hybrid models used for the simulation of A + A collisions, is the presence of the pre-thermal dynamics description for the strongly interacting matter created as a result of the collision (it is implemented using the energy-momentum transport approach based on the Boltzmann equation in the relaxation time approximation-see the papers [52,66,67] for the details). During the corresponding evolution stage, the system is gradually transformed from an essentially non-equilibrium state it has at the very initial times right after the overlapping of the two colliding nuclei to a nearly equilibrated state, which can be further described in the approximation of relativistic viscous hydrodynamics [72,73].…”

Section: Methodsmentioning

confidence: 99%

“…where U µ = (cosh η, 0, 0, sinh η), V µ = (sinh η, 0, 0, cosh η), η is space-time rapidity, and Λ = λ ⊥ /λ = 100 is the model parameter, describing the initial momentum anisotropy (see [52,66,67] for the details).…”

Section: Methodsmentioning

confidence: 99%

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Space–Time Structure of Particle Emission and Femtoscopy Scales in Ultrarelativistic Heavy-Ion Collisions

Sinyukov,

Shapoval,

Adzhymambetov

2023

Universe

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The analysis of the spatiotemporal picture of particle radiation in relativistic heavy-ion collisions in terms of correlation femtoscopy scales, emission, and source functions allows one to probe the character of the evolution of the system created in the collision. Realistic models, such as the integrated hydrokinetic model (iHKM), used in the present work, are able to simulate the entire evolution process of strongly interacting matter produced in high-energy nuclear collisions. The mentioned model describes all the stages of the system’s evolution, including thermalisation and hydrodynamisation, which can help researchers figure out the specific details of the process and better understand the formation mechanisms of certain observables. In the current paper, we investigated the behaviour of the pion and kaon interferometry radii and their connection with emission functions in ultrarelativistic heavy-ion collisions at the Large Hadron Collider within iHKM. We focused on the study of the emission time scales at different energies for both particle species (pions and kaons) aiming to gain deeper insight into relation of these scales and the peculiarities of the mentioned system’s collective expansion and decay with the experimentally observed femtoscopy radii. One of our main interests was the problem of the total system’s lifetime estimation based on the femtoscopy analysis.

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Section: Methodsmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

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Space–Time Structure of Particle Emission and Femtoscopy Scales in Ultrarelativistic Heavy-Ion Collisions

Sinyukov,

Shapoval,

Adzhymambetov

2023

Universe

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“…This was not supported by RHIC data [39,40] and then led to the essential revision of the hydrodynamic models [41]. Since then, several aspects were found to be important: the presence of prethermal transverse flow, a crossover phase transition between quark-gluon and hadron matters for high RHIC and LHC energies [42], the non-hydrodynamic behavior of the hadron gas at the latest stage, and correct matching between hydrodynamic and non-hydrodynamic stages [43][44][45]. The recent theoretical considerations [46] demonstrate that the first-order quark-hadron phase transition can lead to a reasonable description of some bulk observables, but there is a lack of such a study for femtoscopy (especially for heavier-than-pion particles).…”

Section: Introductionmentioning

confidence: 99%

Particle Multiplicity Fluctuations and Spatiotemporal Properties of Particle-Emitting Source of Strongly Interacting Matter for NICA and RHIC Energies

et al. 2022

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The results of the model analysis of hadron femtoscopic correlations and factorial moments of particle multiplicity in heavy ion collisions for the energy range of the Beam Energy Scan (BES) program at RHIC and future NICA collider are presented. For this purpose, the simulation of Au+Au collisions at center-of-mass energies 7.7 and 11.5 GeV per nucleon pair using the UrQMD, vHLLE+UrQMD (with the crossover and first-order equation of states), and HYDJET++ event generators was performed. The sensitivity of pion and kaon correlation radii and the dependence of the factorial moments on heavy ion beam energy to quark–hadron phase transition details was studied. In addition, the possible influence of some relevant detector effects on the corresponding experimental observables is discussed.

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Femtoscopic correlations of identical charged pions and kaons in pp collisions at s=13 TeV with event-shape selection

Acharya,

Adamová,

Aglieri Rinella

et al. 2024

Phys. Rev. C

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Collective behavior has been observed in high-energy heavy-ion collisions for several decades. Collectivity is driven by the high particle multiplicities that are produced in these collisions. At the CERN Large Hadron Collider (LHC), features of collectivity have also been seen in high-multiplicity proton-proton collisions that can attain particle multiplicities comparable to peripheral Pb-Pb collisions. One of the possible signatures of collective behavior is the decrease of femtoscopic radii extracted from pion and kaon pairs emitted from high-multiplicity collisions with increasing pair transverse momentum. This decrease can be described in terms of an approximate transverse mass scaling. In the present work, femtoscopic analyses are carried out by the ALICE Collaboration on charged pion and kaon pairs produced in pp collisions at s=13TeV from the LHC to study possible collectivity in pp collisions. The event-shape analysis method based on transverse sphericity is used to select for spherical versus jetlike events, and the effects of this selection on the femtoscopic radii for both charged pion and kaon pairs are studied. This is the first time this selection method has been applied to charged kaon pairs. An approximate transverse-mass scaling of the radii is found in all multiplicity ranges studied when the difference in the Lorentz boost for pions and kaons is taken into account. This observation does not support the hypothesis of collective expansion of hot and dense matter that should only occur in high-multiplicity events. A possible alternate explanation of the present results is based on a scenario of common emission conditions for pions and kaons in pp collisions for the multiplicity ranges studied. ©2024 CERN, for the ALICE Collaboration 2024 CERN

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Femtoscopy scales and particle production in the relativistic heavy ion collisions from Au+Au at 200 AGeV to Xe+Xe at 5.44 ATeV within the integrated hydrokinetic model

Cited by 4 publications

References 77 publications

Space–Time Structure of Particle Emission and Femtoscopy Scales in Ultrarelativistic Heavy-Ion Collisions

Space–Time Structure of Particle Emission and Femtoscopy Scales in Ultrarelativistic Heavy-Ion Collisions

Particle Multiplicity Fluctuations and Spatiotemporal Properties of Particle-Emitting Source of Strongly Interacting Matter for NICA and RHIC Energies

Femtoscopic correlations of identical charged pions and kaons in pp collisions at s=13 TeV with event-shape selection

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