Observation of a Charged Charmoniumlike Structure in e(+)e(-) -> (D* (D)over-bar*)(+/-)pi(-/+) at root s=4.26 GeV

	*Observation of a Charged Charmoniumlike Structure in e(+)e(-) -> (D (D)over-bar)(+/-)pi(-/+) at root s=4.26 GeV*
	BESIII Callaboration
刊名	PHYSICAL REVIEW LETTERS
	2014
卷号	112 期号:13
关键词	HIGH-ENERGY
通讯作者	Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	We study the process e(+)e(-) -> (D* (D) over bar)(+/-)pi(-/+) at a center-of-mass energy of 4.26 GeV using a 827 pb(-1) data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be (137 +/- 9 +/- 15) pb. We observe a structure near the (D (D) over bar)(+/-) threshold in the pi(-/+) recoil mass spectrum, which we denote as the Z(c)(+/-) (4025). The measured mass and width of the structure are (4026.3 +/- 2.6 +/- 3.7) MeV/c(2) and (24.8 +/- 5.6 +/- 7.7) MeV, respectively. Its production ratio sigma(e(+)e(-) -> Z(c)(+/-)(4025)pi(-/+)-> (D (D) over bar)(+/-)pi(-/+)/sigma(e(+)e(-) -> (D (D) over bar*)(+/-)pi(-/+) is determined to be 0.65 +/- 0.09 +/- 0.06. The first uncertainties are statistical and the second are systematic.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000334337500008
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213696]
专题	高能物理研究所_实验物理中心
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	BESIII Callaboration. Observation of a Charged Charmoniumlike Structure in e(+)e(-) -> (D* (D)over-bar*)(+/-)pi(-/+) at root s=4.26 GeV[J]. PHYSICAL REVIEW LETTERS,2014,112(13).
APA	BESIII Callaboration.(2014).Observation of a Charged Charmoniumlike Structure in e(+)e(-) -> (D* (D)over-bar*)(+/-)pi(-/+) at root s=4.26 GeV.PHYSICAL REVIEW LETTERS,112(13).
MLA	BESIII Callaboration."Observation of a Charged Charmoniumlike Structure in e(+)e(-) -> (D* (D)over-bar*)(+/-)pi(-/+) at root s=4.26 GeV".PHYSICAL REVIEW LETTERS 112.13(2014).