Multiparton Tomography of Hot and Cold Nuclear Matter

Details Multiparton Tomography of Hot and Cold Nuclear Matter Multiparton Tomography of Hot and Cold Nuclear Matter

2003-08-09

arxiv.org/abs/nucl-th/0308028v1

Physics

Nuclear Physics

Nuclear Theory

Prepared for the CIPANP 2003 conference proceedings. 4 pages, 4 figures

Scientific paper

10.1063/1.1664337

Multiple parton interactions in relativistic heavy ion reactions result in transverse momentum diffusion and medium induced non-Abelian energy loss of the hard probes traversing cold and hot nuclear matter. A systematic study of the interplay of nuclear effects on the $p_T \geq 2$ GeV inclusive hadron spectra demonstrates that the competition between nuclear shadowing, multiple scattering and jet quenching leads to distinctly different enhancement/suppression of moderate and high-$p_T$ hadron production in $d+Au$ and $Au+Au$ collisions at RHIC. The associated increase of di-jet acoplanarity, measured via the broadening of the back-to-back di-hadron correlation function, provides an additional experimental tool to test the difference in the dynamical properties of the media created in such reactions.

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