Related paper Directed flow of charged particles at mid-rapidity relative to the spectator plane in Pb-Pb collisions at $\sqrt{s_\rm{NN}}$=2.76 TeV (a) $v_1$ versus transverse momentum. (b) $v_1^{\rm odd}$ comparison with STAR data. See text and Fig. 2 for description of the data points. Lines (to guide the eye) represent fits with a third order polynomial. [png] [eps]
