IHEP OpenIR  > 实验物理中心
Study of K-s(0) reconstruction and lifetime measurement at BES II
其他题名K-s(0) 重建及其寿命测量在BESII上的研究
Wang Z(王喆); Yuan Y(袁野); Zhang ZC(张长城); Wang, Z; Yuan, Y; Zhang, CC
2003
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
卷号27期号:1页码:1-6
通讯作者Wang, Z (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China.
摘要The beam collision center of the BEPC has slightly shifted from geometrical origin of the BES detector and the beam bunch of the BEPC also has certain size. For these reasons, to measure K-s(0) lifetime, primary vertex reconstruction must be carried out. After the investigation of di-muon bhabha and hadron events, the beam collision center for each run is determined by bhabha and di-muon events. For the large branching ratio of J/ -->K-s(0), K-*0-->K+/- pi(-/+): pi(+) pi(-) and the existence of the resonance of K (*0), this channel is chosen to provide much pure K-s(0) signal. With the aid of M. C. tools at BES U, existing software for secondary vertex reconstruction is adjusted and improved. A new method of secondary vertex determination is used and a better position resolution of secondary vertex is obtained. The lifetime of K-s(0) is measured with channel J/ -->K-s(0), K-*0 and the inclusive K-s(0) mass is investigated with BES parallel to 's 50M J/ data sample, which give consistent K-s(0) lifetime and mass with PDG's value within error. 1C fit on K-s(0) mass is also studied with M. C. events. The resolution of momentum and energy of pi(+) pi(-) and K-s(0) is improved too.
文章类型Article
关键词primary vertex secondary vertex lifetime measurement
学科领域Physics
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000180568600002
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225404
专题实验物理中心
推荐引用方式
GB/T 7714
Wang Z,Yuan Y,Zhang ZC,et al. Study of K-s(0) reconstruction and lifetime measurement at BES II[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2003,27(1):1-6.
APA 王喆,袁野,张长城,Wang, Z,Yuan, Y,&Zhang, CC.(2003).Study of K-s(0) reconstruction and lifetime measurement at BES II.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,27(1),1-6.
MLA 王喆,et al."Study of K-s(0) reconstruction and lifetime measurement at BES II".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 27.1(2003):1-6.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
30.pdf(212KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[王喆]的文章
[袁野]的文章
[张长城]的文章
百度学术
百度学术中相似的文章
[王喆]的文章
[袁野]的文章
[张长城]的文章
必应学术
必应学术中相似的文章
[王喆]的文章
[袁野]的文章
[张长城]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 30.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。