Extraction of the width of the W boson from measurements of sigma(p(p)over-bar -> W+X) x B(W -> e nu) and sigma(p(p)over-bar -> Z+X) x B(Z -> ee) and their ratio
文献类型：期刊论文
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2000 |
| 卷号 | 61期号:7 |
| 关键词 | CTEQ PARTON DISTRIBUTIONS CERN PBARP COLLIDER YAN K-FACTOR ROOT-S=1.8 TEV P(P)OVER-BAR COLLISIONS GAMMA COUPLINGS CROSS-SECTIONS E(+)E(-) INTERACTIONS TRANSVERSE-MOMENTUM PAIR-PRODUCTION |
| 通讯作者 | Abbott, B (reprint author), NYU, New York, NY 10003 USA. |
| 英文摘要 | We report on measurements on inclusive cross sections times branching fractions into electrons for W and Z bosons produced in p (p) over bar collisions at root s = 1.8 TeV. From an integrated luminosity of 84.5 pb(-1) recorded in 1994-1995 using the D empty set detector at the Fermilab Tevatron, we determine sigma(p (p) over bar--> W + X) x B(W-->e nu) = 2310 +/- 10(stat) +/- 50(syst) +/- 100(lum)pb and sigma(p (p) over bar-->Z + X) x B(Z-->ee)=221+/-3(stat)+/-4(syst)+/-10(lum)pb. From these, we derive sigma(p (p) over bar-->W + X) x B(N-->e nu)/sigma(p (p) over bar-->Z + X) x B(Z-->ee) = 10.43+/-0.15(stat) +/- 0.20(syst) +/- 0.10(NLO), B(W-->e nu) = 0.1044+/-0.0015(stat)+/-0.0020(syst)+/-0.0017(theory)+/-0.0010(NLO). and Gamma(w) = 2169 +/- 0.03 l(stat) +/- 0.042(syst) +/- 0.041(theory)+/- 0.022(NLO)GeV. We use the latter to set a 95% confidence level upper limit on the partial decay width of the W boson into nonstandard model final states, Gamma(W)(inv), of 0.213 GeV. Combining these results with those from the 1992-1993 data gives sigma(p (p) over bar-->W+X) x B(W-->e nu)/sigma(p (p) over bar-->Z+X) x B(Z-->ee) = 10.51+/-0.25, Gamma(W) = 2.152 +/- 0.066 GeV, and a 95% C.L. upper limit an Gamma(W)(inv) of 0.191 GeV. Using a sample with a luminosity of 505 nb(-1) taken at root s = 630 GeV, we measure sigma(p (p) over bar--> W+ X) x B(W --> e nu) = 658 +/- 67 pb. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000086065200009 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212034]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 推荐引用方式 GB/T 7714 | . Extraction of the width of the W boson from measurements of sigma(p(p)over-bar -> W+X) x B(W -> e nu) and sigma(p(p)over-bar -> Z+X) x B(Z -> ee) and their ratio[J]. PHYSICAL REVIEW D,2000,61(7). |
| APA | (2000).Extraction of the width of the W boson from measurements of sigma(p(p)over-bar -> W+X) x B(W -> e nu) and sigma(p(p)over-bar -> Z+X) x B(Z -> ee) and their ratio.PHYSICAL REVIEW D,61(7). |
| MLA | "Extraction of the width of the W boson from measurements of sigma(p(p)over-bar -> W+X) x B(W -> e nu) and sigma(p(p)over-bar -> Z+X) x B(Z -> ee) and their ratio".PHYSICAL REVIEW D 61.7(2000). |
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。