(Multiple) Hard Parton Interactions in Heavy-Ion Collisions
Abstract
Multiple hard interactions of partons in the same p+p(\bar p) collision are a useful concept in the description of these collisions at collider energies. In particular, they play a crucial role for the understanding of the background (the so-called underlying event) in the reconstruction of jets. In nucleus-nucleus collisions multiple hard parton interactions and the corresponding production of mini-jets are expected to contribute significantly to the total particle multiplicity. In this article a brief overview of results on particle production at high-pT in proton-proton and nucleus-nucleus at RHIC will be given. Moreover, the observed centrality dependence of the charged particle multiplicity in Au+Au collisions will be discussed in light of multiple partonic interactions.
Cite
@article{arxiv.0908.2377,
title = {(Multiple) Hard Parton Interactions in Heavy-Ion Collisions},
author = {Klaus Reygers},
journal= {arXiv preprint arXiv:0908.2377},
year = {2009}
}
Comments
7 pages, 4 figures, to appear in the proceedings of the first International Workshop on Multiple Partonic Interactions at the LHC "1st MPI@LHC", Perugia, Italy, 27-31 October, 2008