English

Systematic study of the experimental measurements on ratios of different $\Upsilon$ states

High Energy Physics - Experiment 2016-07-27 v1 Nuclear Experiment

Abstract

The world data on yields and ratios of different Υ\Upsilon states created in hadron collisions at s=198000\sqrt{s} = 19-8000 GeV are examined in systematic way. We find that Υ(2S)/Υ(1S)=0.275±0.005\Upsilon(2S)/\Upsilon(1S)=0.275\pm0.005 and Υ(3S)/Υ(1S)=0.128±0.004\Upsilon(3S)/\Upsilon(1S)=0.128\pm0.004. No signficant energy dependence of these ratios are observed within the broad collision energies. In addition, the rapidity, transverse momentum, and transverse mass dependence of these ratios are also reported.

Keywords

Cite

@article{arxiv.1308.4720,
  title  = {Systematic study of the experimental measurements on ratios of different $\Upsilon$ states},
  author = {Wangmei Zha and Chi Yang and Bingchu Huang and Lijuan Ruan and Shuai Yang and Zebo Tang and Zhangbu Xu},
  journal= {arXiv preprint arXiv:1308.4720},
  year   = {2016}
}