Vorticity in nuclear fluid dynamics

We consider a model for gloun jet fragmentation based on QCD in which the fast hadrons in the jet are produced by the sequential reaction gluon $\text{→}\text{q}\text{q}\text{?}\text{q}\text{→}$ hadrons. The resulting jet shows an oblate transverse momentum structure, with a major axis preferential oriented normally to the direction of linear polarization of the gluon. We discuss jet-jet oblateness angular correlations in decays of heavy QQ? pseudoscalar and vector systems.