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arXiv · 1910.14618

Blast-wave description of $Υ$ elliptic flow at energies available at the CERN Large Hadron Collider

Klaus Reygers·Alexander Schmah·Anastasia Berdnikova·Xu Sun
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Abstract

A simultaneous blast-wave fit to particle yields and elliptic flow ($v_{2}$) measured as a function of transverse momentum in Pb-Pb collisions at LHC energies is presented. A compact formula for the calculation of $v_2(p_T)$ for an elliptic freeze-out surface is used which follows from the Cooper-Frye ansatz without further assumptions. Over the full available $p_T$ 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 10 GeV/$c$.

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Klaus Reygers, Alexander Schmah, Anastasia Berdnikova, Xu Sun. 2020-06-27. Blast-wave description of $Υ$ elliptic flow at energies available at the CERN Large Hadron Collider. https://doi.org/10.1103/physrevc.101.064905

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