Enhanced hydrodynamic predictions for v₀₂(p_T)

2026/07/23 by Rupam Samanta, Tribhuban Parida, Jean-Yves Ollitrault
#nucl-th #hep-ph #nucl-ex

paper · pdf

Abstract

We present hydrodynamic predictions for the new observable v₀₂(p_T), which measures the correlation of particle spectra with elliptic flow. We implement a data-driven correction so as to match hydrodynamic calculations to elliptic flow (v₂(p_T)) data. The corrected results are in fair agreement with v₀(p_T) data up to high p_T. We make predictions for v₀₂(p_T) of unidentified charged hadrons up to p_T=10~GeV/c, and of pions, kaons and protons up to p_T=5-6~GeV/c, in several centrality windows, for Pb+Pb collisions at √s_NN=5.02~TeV. For p_T>4~GeV/c, we predict a decrease of v₀₂(p_T) of charged hadrons in mid-central collisions, and meson-baryon splitting. We also predict a non-monotonic variation of v₀₂(p_T) for protons at low p_T above 30% centrality. This is a specific feature of this new observable, which is not observed for the usual flow observables v₂(p_T) and v₀(p_T).

Related

• Correlation between particle spectra and elliptic flow
• Collision energy dependence of elliptic flow of identified hadrons in heavy-ion collisions using the PHSD model
• Elliptic flow from pQCD + saturation + hydro model
• Measuring hydrodynamical expansion via the production of identified hadrons in Pb-Pb collisions with ALICE
• Quadrupole spectra derived from 2.76 TeV Pb-Pb identified-hadron \bf v₂(p_t) data