Does quark number scaling breakdown in Pb+Pb collisions at Root_s = 2.76 TeV?

Roy A. Lacey, Yi Gu, X. Gong +5

The anisotropy coefficient $v_2$, for unidentified and identified charged hadrons [pions ($\pi$), kaons ($K$) and protons ($p$)] measured in Au+Au collisions at $\sqrt{s_{NN}}=0.20$…