Inclusive J/$\psi$ frame-invariant quantity $\widetilde{\lambda}$ in pp collisions at $\sqrt{s} = 8$ TeV in the Collins-Soper (red points, shifted horizontally by $-0.1$ \GeVc) and helicity (green squares, shifted horizontally by $+0.1$ \GeVc) frames compared with the NLO CSM (blue full band) and NRQCD (red shaded band) model predictions from . | |