A simultaneous blast-wave fit to particle yields and elliptic flow (v2) measured as a function of transverse momentum in Pb-Pb collisions at energies available at the Large Hadron Collider (LHC) is presented. A compact formula for the calculation of v2(pT) for an elliptic freeze-out surface is used which follows from the Cooper-Frye ansatz without further assumptions. Over the full available pT range, the Υ elliptic flow data is described by the prediction based on the fit to lighter particles. This prediction shows that, due to the large Υ mass, a sizable elliptic flow is only expected at transverse momenta above 10GeV/c.

K. Reygers, A. Schmah, A. Berdnikova, and X. Sun, “Blast-wave description of  elliptic flow
at energies available at the CERN Large Hadron Collider”, Phys. Rev. C 101, 064905 (2020).


Related to Project A01