Heavy quarkonium production in Z decays
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 1999 |
| 卷号 | 453期号:1--2页码:94-106 |
| 关键词 | HADRONIC Z(0) DECAYS J/PSI-PRODUCTION UPSILON-PRODUCTION FRAGMENTATION CHARMONIUM LEP ANNIHILATION COLLISIONS TEVATRON PHYSICS |
| 通讯作者 | Acciarri, M (reprint author), Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy. |
| 英文摘要 | We report measurements of the inclusive production of heavy quarkonium states in Z decays based on the analysis of 3.6 million hadronic events collected by the L3 detector at LEP. The measurement of inclusive J production and an improved 95% confidence level upper limit on gamma production are presented. In addition, two independent measurements of the ratio, f(p), Of prompt J mesons to those from B decay are made using two different isolation cuts to separate prompt J mesons from J mesons produced in the decays of b hadrons. The results are: Br(Z --> J + X) = (3.21 +/- 0.21 (stat.)(-0.28)(+0.19) (sys.)) X 10(-3) Br(Z --> gamma(1S) + X) < 4.4 x 10(-5), f(p) = (7.1 +/- 2.1 (stat.) +/- 1.2 (sys.)(-0.8)(+1.5) (theo.)) X 10(-2). (C) 1999 Published by Elsevier Science B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000080246100012 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/211978]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 推荐引用方式 GB/T 7714 | . Heavy quarkonium production in Z decays[J]. PHYSICS LETTERS B,1999,453(1--2):94-106. |
| APA | (1999).Heavy quarkonium production in Z decays.PHYSICS LETTERS B,453(1--2),94-106. |
| MLA | "Heavy quarkonium production in Z decays".PHYSICS LETTERS B 453.1--2(1999):94-106. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。