| Autor: |
Zha, Wangmei, Yang, Chi, Huang, Bingchu, Ruan, Lijuan, Yang, Shuai, Tang, Zebo, Xu, Zhangbu |
| Rok vydání: |
2013 |
| Předmět: |
|
| DOI: |
10.48550/arxiv.1308.4720 |
| Popis: |
The world data on yields and ratios of different $��$ states created in hadron collisions at $\sqrt{s} = 19-8000$ GeV are examined in systematic way. We find that $��(2S)/��(1S)=0.275\pm0.005$ and $��(3S)/��(1S)=0.128\pm0.004$. 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. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
