Related paper First measurement of quarkonium polarization in nuclear collisions at the LHC Fit to the $\jpsi$ 2D angular distributions in the helicity reference frame projected along $\cos\theta$ (left) and $\phi$ (right) for $2.5< y and="" gev="" the="" displayed="" uncertainties="" are="" statistical.="">< /y>[png] [pdf] [eps][png] [pdf] [eps]