Confirmation of the doubly charmed baryon Epsilon(+)(cc)(3520) via its decay to pD(+)K(-)
SELEX Collaboration
刊名PHYSICS LETTERS B
2005
卷号628期号:1--2页码:18-24
关键词LIFETIMES SIGMA(-) PI(-)
学科分类Physics
DOI10.1016/j.physletb.2005.09.043
通讯作者Ocherashvili, A (reprint author), Ball State Univ, Muncie, IN 47306 USA.
英文摘要We observe a signal for the doubly charmed baryon Xi(cc)(+) in the decay mode Xi(cc)(+) -> pD(+)K(-) to complement the previous cc reported decay Xi(cc)(+) -> Lambda(c)(+)K(-)pi(+) in data from SELEX, the charm hadroproduction experiment at Fermilab. In this new decay mode we observe an excess of 5.62 events over a combinatoric background estimated by event mixing to be 1.38 +/- 0.13 events. The mixed background has Gaussian statistics, giving a signal significance of 4.8 sigma. The Poisson probability that a background fluctuation can produce the apparent signal is less than 6.4 x 10(-4). The observed mass of this state is 3518 +/- 3 MeV/c(2), consistent with the published result. Averaging the two results gives a mass of 3518.7 +/- 1.7 MeV/c(2). The observation of this new weak decay mode confirms the previous SELEX suggestion that this state is a double charm baryon. The relative branching ratio for these two modes is 0.36 +/- 0.21. (c) 2005 Elsevier B.V. All rights reserved.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000232955800003
引用统计
被引频次:155[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/311005/212617
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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
SELEX Collaboration. Confirmation of the doubly charmed baryon Epsilon(+)(cc)(3520) via its decay to pD(+)K(-)[J]. PHYSICS LETTERS B,2005,628(1--2):18-24.
APA SELEX Collaboration.(2005).Confirmation of the doubly charmed baryon Epsilon(+)(cc)(3520) via its decay to pD(+)K(-).PHYSICS LETTERS B,628(1--2),18-24.
MLA SELEX Collaboration."Confirmation of the doubly charmed baryon Epsilon(+)(cc)(3520) via its decay to pD(+)K(-)".PHYSICS LETTERS B 628.1--2(2005):18-24.
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
1944.pdf(225KB)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
[SELEX Collaboration]的文章
百度学术
百度学术中相似的文章
[SELEX Collaboration]的文章
必应学术
必应学术中相似的文章
[SELEX Collaboration]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 1944.pdf
格式: Adobe PDF
此文件暂不支持浏览
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。