Gluon shadowing and jet quenching inA+Acollisions at √s=200AGeV

The sensitivity of moderate ${\mathit{p}}_{\mathit{T}}$≲8 GeV/c singles inclusive spectra in nuclear collisions to gluon shadowing and jet quenching is estimated using the h i g i n g Monte Carlo model. We show how the systematic study of the nuclear dependence of those spectra in p+A can be used to determine the magnitude of gluon shadowing and how the enhanced suppression in A+A would provide information on the energy-loss mechanisms in dense partonic matter.