English

Modification of jet-like correlations in Pb-Au at the SPS

Nuclear Experiment 2019-08-13 v1

Abstract

A high statistics study of high-ptp_t two-particle azimuthal correlations in Pb-Au at sNN=17.2\sqrt{s_{\rm NN}}=17.2 GeV, performed by the CERES experiment at the CERN-SPS, is presented. A broad away-side correlation with significant dip at Δϕπ\Delta\phi\approx\pi is observed. The shape and magnitude of the correlation is similar to measurements at RHIC. In comparison to PYTHIA calculations, we observe a significant excess of soft particles at the away-side. A study of charge correlations between trigger and associated particles disfavors vacuum fragmentation of the away-side jet and suggests significant energy transfer of the hard-scattered parton to the medium.

Keywords

Cite

@article{arxiv.0907.5573,
  title  = {Modification of jet-like correlations in Pb-Au at the SPS},
  author = {Harald Appelshauser and Stefan Kniege},
  journal= {arXiv preprint arXiv:0907.5573},
  year   = {2019}
}

Comments

Proceedings to Quark Matter 2009 Conference, Knoxville, Tennessee, USA