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Observation of e(+)e(-) -> pi(0)pi(0)h(c) and a Neutral Charmoniumlike Structure Z(c)(4020)(0)
BESIII Callaboration
2014
发表期刊PHYSICAL REVIEW LETTERS
卷号113期号:21
通讯作者Ji, QP (reprint author), Nankai Univ, Tianjin 300071, Peoples R China.
摘要Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of root s = 4.23, 4.26, and 4.36 GeV, we observe e(+)e(-) -> pi(0)pi(0)h(c) for the first time. The Born cross sections are measured and found to be about half of those of e(+)e(-) -> pi(+)pi(-)h(c) within less than 2 sigma. In the pi(0)h(c) mass spectrum, a structure at 4.02 GeV/c(2) is found. It is most likely to be the neutral isospin partner of the Z(c)(4020)(+/-) observed in the process of e(+)e(-) -> pi(+)pi(-)h(c) being found. A fit to the pi(0)h(c) invariant mass spectrum, with the width of the Z(c)(4020)(0) fixed to that of its charged isospin partner and possible interferences with non-Z(c)(4020)(0) amplitudes neglected, gives a mass of (4023.9 +/- 2.2 +/- 3.8) MeV/c(2) for the Z(c)(4020)(0), where the first error is statistical and the second systematic.
关键词Z(C)(3900)
学科领域Physics
DOI10.1103/PhysRevLett.113.212002
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000345356900003
引用统计
被引频次:71[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/311005/213819
专题实验物理中心
作者单位中国科学院高能物理研究所
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BESIII Callaboration. Observation of e(+)e(-) -> pi(0)pi(0)h(c) and a Neutral Charmoniumlike Structure Z(c)(4020)(0)[J]. PHYSICAL REVIEW LETTERS,2014,113(21).
APA BESIII Callaboration.(2014).Observation of e(+)e(-) -> pi(0)pi(0)h(c) and a Neutral Charmoniumlike Structure Z(c)(4020)(0).PHYSICAL REVIEW LETTERS,113(21).
MLA BESIII Callaboration."Observation of e(+)e(-) -> pi(0)pi(0)h(c) and a Neutral Charmoniumlike Structure Z(c)(4020)(0)".PHYSICAL REVIEW LETTERS 113.21(2014).
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