Determination of decay width error and luminosity in psi(2S) scan
文献类型：期刊论文
| 作者 | Mo XH(莫晓虎) ; Zhu YS(朱永生); Mo, XH; Zhu, YS
|
| 刊名 | HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
 |
| 出版日期 | 2001 |
| 卷号 | 25期号:12页码:1133-1139 |
| 关键词 | psi(2S) particle decay width integrated luminosity iteration sampling |
| 通讯作者 | Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China |
| 英文摘要 | The observed cross sections of processes e(+) e(-) --> e(+) e(-), mu (+) mu (-), pi (+) pi (-) J/phi and hadrons at 24 energy points in the vicinity of phi (2 S) resonance have been measured by BES ( Beijing Spectrometer). The resonance cross sections for above four final states take the Breit-Wigner forms. By combining the cross sections of resonance part, continuum(QED or QCD) part and their interferences together with radiative corrections, and then convoluted with the energy spread of BEPC ( Beijing Electron and Positron Collider), the chi (2) fit of these 4 observed cross sections with the assumption of e-mu-tau universality gives the decay widths and branching ratios of phi (2S) : Gamma (t), Gamma (mu), Gamma (h), pi (+)pi (-) (J/phi), B-mu, B-h, Bpi+pi -J/phi. This article mainly describes the methods for calculating the intregral luminosity and for determining the fitting errors of (2S) decay widths and branching ratios in this scan experiment. The intregral luminosity for each energy point is calculated by using the data of e(+)e(-) final state and the iteration method with assumption of lepton universality, that is B-e = B-mu. The errors of decay widths and branching ratios are determined by Monte Carlo sampling method. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Nuclear ; Physics, Particles & Fields |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000172849500001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/239099]  |
| 专题 | 高能物理研究所_实验物理中心 高能物理研究所_加速器中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Mo XH,Zhu YS,Mo, XH,et al. Determination of decay width error and luminosity in psi(2S) scan[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2001,25(12):1133-1139. |
| APA | 莫晓虎,朱永生,Mo, XH,&Zhu, YS.(2001).Determination of decay width error and luminosity in psi(2S) scan.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,25(12),1133-1139. |
| MLA | 莫晓虎,et al."Determination of decay width error and luminosity in psi(2S) scan".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 25.12(2001):1133-1139. |
入库方式： OAI收割
来源：高能物理研究所
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