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Study of charmonium(-like) states via ISR at Belle
Belle Collaboration
2008
发表期刊CHINESE PHYSICS C
卷号32期号:6页码:452-454
通讯作者Yuan, CZ (reprint author), CAS, Inst High Energy Phys, Beijing 100049, Peoples R China.
摘要The cross sections for e(+)e(-) -> pi+pi-J/psi, pi+pi-psi(2S), K(+)K(-)J/psi, D (D) over bar, D(0)D(-)pi(+)+c.c., D*(D) over bar +c.c., and D*(D) over bar* are measured using data sample collected on or near the gamma(4S) resonance with the Belle detector at KEKB. A peak near 4.25 GeV/c(2), corresponding to the so called Y(4260), is observed in pi+pi-J/psi final state. In addition, there is another cluster of events at around 4.05 GeV/c(2). 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). The rich structures observed in all these final states indicate that our understanding of the vector charmonium states above the open charm threshold is still poor, let alone the other possible dynamics such as charmonium hybrids or final state re-scattering and so on.
学科领域Physics
收录类别SCI
语种英语
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000256408500009
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212856
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. Study of charmonium(-like) states via ISR at Belle[J]. CHINESE PHYSICS C,2008,32(6):452-454.
APA Belle Collaboration.(2008).Study of charmonium(-like) states via ISR at Belle.CHINESE PHYSICS C,32(6),452-454.
MLA Belle Collaboration."Study of charmonium(-like) states via ISR at Belle".CHINESE PHYSICS C 32.6(2008):452-454.
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