Dynamical vs geometric anisotropy in relativistic heavy-ion collisions: which one prevails?

Abstract

We study the influence of geometric and dynamical anisotropies on the development of flow harmonics and, simultaneously, on the second- and third-order oscillations of femtoscopy radii. The analysis is done within the Monte Carlo event generator HYDJET++, which was extended to dynamical triangular deformations. It is shown that the merely geometric anisotropy provides the results which anticorrelate with the experimental observations of either $v_2$ (or $v_3$) or second-order (or third-order) oscillations of the femtoscopy radii. Decays of resonances significantly increase the emitting areas but do not change the phases of the radii oscillations. In contrast to the spatial deformations, the dynamical anisotropy alone provides the correct qualitative description of the flow and the femtoscopy observables simultaneously. However, one needs both types of the anisotropy to match quantitatively the experimental data.

minor corrections, published version

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Cited by in corpus (5)

• Toward a description of the centrality dependence of the charge balance function in the HYDJET++ model
• Pseudorapidity density, transverse momentum spectra, and elliptic flow studies in Xe-Xe collision systems at $\sqrt{{\mathrm{s}}_{\mathrm{NN}}}=5.44TeV$ using the HYDJET++ model
• Transverse momentum spectra and suppression of charged hadrons in deformed Xe-Xe collisions at $\sqrt{s_{NN}}$ = 5.44 TeV using HYDJET++ model
• Unraveling alignment pattern in high-energy particles via transverse momentum disbalance analysis
• Higher-order anisotropic flow correlations in Xe-Xe collisions at $\sqrt{{\mathrm{s}}_{\mathrm{NN}}}=5.44TeV$