Upsilon Productions at STAR
Abstract
The cross section is measured at mid-rapidity () in collisions and in d collisions at center-of-mass energy = 200 GeV with the STAR detector at RHIC. In , the measured cross section is found to be consistent with the world data trend as a function of , in agreement with the Color Evaportaion Model (CEM), and underestimated by the Color Singlet Model (CSM) up to the Next-to-Leading-Order Quantum Chromodynamics (NLO QCD) calculations. In d+, the measured cross section is in agreement with the CEM prediction with anti-shadowing effects, and the nuclear modification factor indicates that production follows binary scaling within the current uncertainties. These measurements provide a benchmark for the future measurements of production in collisions.
Keywords
Cite
@article{arxiv.1005.4100,
title = {Upsilon Productions at STAR},
author = {A. M. Hamed},
journal= {arXiv preprint arXiv:1005.4100},
year = {2010}
}
Comments
4 pages, 6 figures, Lake Louise Winter Institute 2010, 15th-20th February 2010 Alberta, Canada