Production and Correlations of Strange Mesons and Baryons at RHIC and LHC in Hydrokinetic Model

Sinyukov, Yu. M.; Shapoval, V. М.

doi:10.5506/aphyspolb.47.1883

Cited by 2 publications

(8 citation statements)

References 37 publications

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“…The reason is that there are two oppositely directed factors which act simultaneously to the transverse gradient of the hydrodynamic pressure that contributes to formation of are larger during the relaxation process when λ is larger. In its turn the transverse gradient of particle or/and energy densities define the transverse flow at free streaming process [21,25]: It grows when the gradient increases.…”

Section: Resultsmentioning

confidence: 99%

“…Equation (21) as well assumes that the chemical potentials are zero. The entropy density is then extracted using the thermodynamical relation + p = T s. In the limiting Navier-Stokes case the fixed ratio of shear viscosity to entropy density η/s = 0.1 is used.…”

Section: Resultsmentioning

confidence: 99%

“…On the other hand, the pre-equilibrium dynamics of the system generates flow at early times and allows one to start hydrodynamics with initial flows at later times; see Ref. [21]. the present paper we neglect bulk pressure, and for the shear stress tensor use the equation of motion as in Ref.…”

Section: Energy-momentum Relaxation Dynamics For a Far-from-equilmentioning

confidence: 99%

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Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model

et al. 2015

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A key ingredient of hydrodynamical modeling of relativistic heavy ion collisions is thermal initial conditions, an input that is the consequence of a prethermal dynamics which is not completely understood yet. In the paper we employ a recently developed energy-momentum transport model of the prethermal stage to study influence of the alternative initial states in nucleus-nucleus collisions on flow and energy density distributions of the matter at the starting time of hydrodynamics. In particular, the dependence of the results on isotropic and anisotropic initial states is analyzed. It is found that at the thermalization time the transverse flow is larger and the maximal energy density is higher for the longitudinally squeezed initial momentum distributions. The results are also sensitive to the relaxation time parameter, equation of state at the thermalization time, and transverse profile of initial energy density distribution: Gaussian approximation, Glauber Monte Carlo profiles, etc. Also, test results ensure that the numerical code based on the energy-momentum transport model is capable of providing both averaged and fluctuating initial conditions for the hydrodynamic simulations of relativistic nuclear collisions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model

et al. 2015

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“…In Refs. [9,16] the problem of spectra formation in hydrodynamic approach to A+A collisions is considered within the Boltzmann equations. It is shown analytically and illustrated by numerical calculations that the particle momentum spectra can be described by the Cooper-Frye prescription (CFp) [17] despite freeze-out is not sharp and has the finite temporal width.…”

Section: Analytical Model For the Interferometry Radiimentioning

confidence: 99%

“…In this letter we partially use the results of Refs. [18,19] and consider the hypersurface of constant Bjorken (proper) time τ , σ p : τ = const, as the hypersurface of maximal emission for soft enough particle momenta p. It is shown [16] that such a hypersurface, limited in transverse direction r T , is typical for soft particles. For the particles with hard momenta, e. g. p T > 0.8 GeV/c, the hypersurface of maximal emission is different from τ ≈ const:…”

Section: Analytical Model For the Interferometry Radiimentioning

confidence: 99%

On m dependence of femtoscopy scales for meson and baryon pairs

2016

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The m T -dependencies of the femto-scales, the so-called interferometry and source radii, are investigated within the hydrokinetic model for different types of particle pairs -pion-pion, kaonkaon, proton-proton and proton-lambda, -produced in Pb+Pb and p + p collisions at the LHC. In particular, such property of the femto-scales momentum behavior as m T -scaling is studied for the systems with (w) and without (w/o) intensive transverse flow, and also w and w/o re-scattering at the final afterburner stage of the matter evolution. The detail spatiotemporal description obtained within hydrokinetic model is compared with the simple analytical results for the spectra and longitudinal interferometry radii depending on the effective temperature on the hypersurface of maximal emission, proper time of such emission, and intensity of transverse flow. The derivation of the corresponding analytical formulas and discussion about a possibility for their utilization by the experimentalists for the simple femtoscopy data analysis is the main aim of this theoretical investigation.PACS numbers: 13.85.Hd, 25.75.Gz 1 PACS: 24.10.Nz, 24.10.Pa, 25.75.Gz, 25.75.Ld.

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Production and Correlations of Strange Mesons and Baryons at RHIC and LHC in Hydrokinetic Model

Cited by 2 publications

References 37 publications

Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model

Initialization of hydrodynamics in relativistic heavy ion collisions with an energy-momentum transport model

On m dependence of femtoscopy scales for meson and baryon pairs

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