English

Has saturation physics been observed in deuteron-gold collisions at RHIC?

High Energy Physics - Phenomenology 2007-05-23 v1

Abstract

We have addressed the question of whether saturation (CGC) has been observed in deuteron-gold collisions at RHIC. We have made a detailed analysis of the Cronin peak characteristic of the nuclear modification factor measured for d-Au collisions at mid-rapidity. The Cronin peak which is obtained around pt3p_t\simeq 3 GeV may be reproduced at the proper height only by boosting the saturation momentum by a huge non-perturbative additional component. At forward rapidity, we get a quantitative agreement with data, reproducing hadron production spectra and the RCPR_{CP} ratio using a recently developed description of the small-x physics.

Keywords

Cite

@article{arxiv.hep-ph/0701184,
  title  = {Has saturation physics been observed in deuteron-gold collisions at RHIC?},
  author = {Yacine Mehtar-Tani},
  journal= {arXiv preprint arXiv:hep-ph/0701184},
  year   = {2007}
}

Comments

4 pages, 2 figures. Talk given at 41st Rencontres de Moriond: QCD and Hadronic Interactions, La Thuile, Italy, 18-25 Mar 2006