ON Z AND Z-ION COLLISIONS(JET PRODUCTION IN HEAVY)

Z + jet production in heavy ion collisions at the LHC is proposed as a possible probe of the properties of the dense hadronic matter. It is shown that the accuracy of this measurement with general purpose LHC d etectors and under realistic experimental conditions can be high enoug h. It is argued also that Z-boson production and subsequent leptonic d ecay is a good reference process for this measurement, as well as for the QCD process of high P-T jet pair production.