HARD JET PROBES IN TERMS OF COLORLESS QCD DIPOLES

Abstract

The forward jet playing the role of a hard probe in high energy QCD scattering is analyzed in terms of QCD dipole (color-singlet [Formula: see text]) configurations in the transverse position space. There are sizable differences with the analogous [Formula: see text] configurations of a hard photon probe which may lead to significant phenomenological consequences on the analysis of hard processes using a forward jet probe, e.g. at the Tevatron. A geometrical interpretation of the resulting distribution in terms of black disk diffraction is proposed.