https://doi.org/10.1140/epja/i2017-12226-5
Regular Article - Theoretical Physics
Energy loss as the origin of a universal scaling law of the elliptic flow
1
Instituto Galego de Física de Altas Enerxías IGFAE, Universidade de Santiago de Compostela, E-15782, Santiago de Compostela, Galicia, Spain
2
Department of High-Energy Physics, Saint Petersburg State University, Saint Petersburg, Russia
* e-mail: carlota.andres@usc.es
Received:
12
October
2016
Accepted:
10
February
2017
Published online:
6
March
2017
It is shown that the excellent scaling of the elliptic flow found for all centralities, species and energies from RHIC to the LHC for pT less than the saturation momentum is a consequence of the energy lost by a parton interacting with the color field produced in a nucleus-nucleus collision. In particular, the deduced shape of the scaling curve describes correctly all the data. We discuss the possible extensions to higher pT, proton-nucleus and proton-proton collisions as well as higher harmonics.
© SIF, Springer-Verlag Berlin Heidelberg, 2017
