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Observation of two resonant structures in e(+)e(-)->pi(+)pi(-)psi(2S) via initial-state radiation at Belle
Belle Collaboration
2007
发表期刊PHYSICAL REVIEW LETTERS
卷号99期号:14
通讯作者Wang, XL (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing, Peoples R China.
摘要The cross section for e(+)e(-)->pi(+)pi(-)psi(2S) between threshold and root s=5.5 GeV is measured using 673 fb(-1) of data on and off the Upsilon(4S) resonance collected with the Belle detector at KEKB. Two resonant structures are observed in the pi(+)pi(-)psi(2S) invariant-mass distribution, one at 4361 +/- 9 +/- 9 MeV/c(2) with a width of 74 +/- 15 +/- 10 MeV/c(2), and another at 4664 +/- 11 +/- 5 MeV/c(2) with a width of 48 +/- 15 +/- 3 MeV/c(2), if the mass spectrum is parametrized with the coherent sum of two Breit-Wigner functions. These values do not match those of any of the known charmonium states.
关键词CROSS-SECTION ANNIHILATION MESONS
学科领域Physics
DOI10.1103/PhysRevLett.99.142002
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000249974000014
引用统计
被引频次:251[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/311005/212832
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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Belle Collaboration. Observation of two resonant structures in e(+)e(-)->pi(+)pi(-)psi(2S) via initial-state radiation at Belle[J]. PHYSICAL REVIEW LETTERS,2007,99(14).
APA Belle Collaboration.(2007).Observation of two resonant structures in e(+)e(-)->pi(+)pi(-)psi(2S) via initial-state radiation at Belle.PHYSICAL REVIEW LETTERS,99(14).
MLA Belle Collaboration."Observation of two resonant structures in e(+)e(-)->pi(+)pi(-)psi(2S) via initial-state radiation at Belle".PHYSICAL REVIEW LETTERS 99.14(2007).
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