Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV
文献类型：期刊论文
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2001 |
| 卷号 | 503期号:1--2页码:10-20 |
| 关键词 | PHOTON-PHOTON COLLISIONS HEAVY-QUARK PRODUCTION 2-PHOTON PROCESSES CHARM PRODUCTION PARTON DISTRIBUTIONS PAIR PRODUCTION L3 EXPERIMENT MONTE-CARLO LEP TRISTAN |
| 通讯作者 | Acciarri, M (reprint author), Ist Nazl Fis Nucl, Sez Milan, Via Celoria 16, I-20133 Milan, Italy. |
| 英文摘要 | The production of c and b quarks gamma gamma collisions is studied with the L3 detector at LEP with 410 pb(-1) of data, collected at centre-of-mass energies from 189 GeV to 202 GeV. Hadronic final states containing c and b quarks are identified by detecting electrons or muons from their semileptonic decays. The cross sections sigma (e(+)e(-) --> e(+)e(-)c (c) over barX) and sigma (e(+)e(-) --> e(+)e(-)b (b) over barX) are measured and compared to next-to-leading order perturbative QCD calculations. The cross section of b production is measured in gamma gamma collisions for the first time. It is in excess of the QCD prediction by a factor of three. (C) 2001 Published by Elsevier Science B.V. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000167698100002 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212107]  |
| 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 | . Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV[J]. PHYSICS LETTERS B,2001,503(1--2):10-20. |
| APA | (2001).Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV.PHYSICS LETTERS B,503(1--2),10-20. |
| MLA | "Measurements of the cross sections for open chasm and beauty production in gamma gamma collisions at root s=189-202 GeV".PHYSICS LETTERS B 503.1--2(2001):10-20. |
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。