Extracting ˆq in event-by-event hydrodynamics and the centrality/energy puzzle
Andres, C., Armesto, N., Niemi, H., Paatelainen, R., Salgado, C. A., & Zurita, P. (2017). Extracting ˆq in event-by-event hydrodynamics and the centrality/energy puzzle. Nuclear Physics A, 967, 492-495. doi:10.1016/j.nuclphysa.2017.05.115
Published inNuclear Physics A
© 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the Creative Commons Attribution license.
In our analysis, we combine event-by-event hydrodynamics, within the EKRT formulation, with jet quenching -ASW Quenching Weights- to obtain high- for charged particles at RHIC and LHC energies for different centralities. By defining a K-factor that quantifies the departure of from an ideal estimate, , we fit the single-inclusive experimental data for charged particles. This K-factor is larger at RHIC than at the LHC but, surprisingly, it is almost independent of the centrality of the collision.