Topological reconstruction of open charm mesons using electron tagging
Nuclear Experiment
2007-05-23 v1
Abstract
We present first results on the topological reconstruction of open charm mesons in p+p collisions at = 200 GeV using electron tagging. The analysis makes use of the full acceptance of the STAR electromagnetic calorimeter during Run VI data taking. A clear D signal is obtained with a remarkable signal-to-background ratio of about 1/7 and a signal significance of about 4. The azimuthal correlation distribution of the subleading electrons associated with open charm mesons exhibits a two-peak structure. We found first indications for prompt charm meson pair production. This correlation technique allows detailed energy loss measurements of open charm mesons in heavy-ion collisions.
Cite
@article{arxiv.0705.2089,
title = {Topological reconstruction of open charm mesons using electron tagging},
author = {Andre Mischke},
journal= {arXiv preprint arXiv:0705.2089},
year = {2007}
}