Coherent multiple scattering and dihadron correlations in heavy ion collisions

Abstract

We present a systematic calculation of the coherent multiple parton scattering with several nucleons in lepton-nucleus and hadron-nucleus collisions. We show that in l+A reactions coherence leads to nuclear shadowing in the structure functions and a modification of the QCD sum rules. In p+A reactions we evaluate the nuclear suppression of single and double inclusive hadron production at moderate transverse momenta. We demonstrate that both spectra and dihadron correlations in p+A collisions at RHIC are sensitive measures of such dynamical nuclear attenuation effects.

Comments: Proceedings of the "32nd International Conference on High Energy Physics", August 16 - 22, 2004, Beijing, China. 4 pages, 4 figures