Lineshape of psi (3770) and low-lying vector charmonium resonance parameters in e(+)e(-) -> D(D)over-bar
Zhang YJ(张远江); Zhao Q(赵强); Zhang, YJ; Zhao, Q
刊名PHYSICAL REVIEW D
2010
卷号81期号:3页码:34011
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.81.034011
通讯作者[Zhang, Yuan-Jiang ; Zhao, Qiang] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Zhao, Qiang] Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
文章类型Article
英文摘要We investigate the D (D) over bar production in e(+)e(-) annihilations near threshold in an effective Lagrangian approach. This shows that the lineshape of the cross section near threshold is sensitive to the contributions from psi', though it is below the D (D) over bar threshold. The recent experimental data from the BES and Belle collaborations allow us to determine the psi'D (D) over bar coupling constant, which appears to be consistent with other theoretical studies. As a consequence, the psi'-psi(3770) mixing parameter can be extracted around the psi(3770) mass region. Resonance parameters for psi(3770), X(3900), psi(4040), and psi(4160) are also investigated. The X(3900) appears as an enhancement at around 3.9 GeV in the Belle data. In addition to treating it as a resonance, we also study the mechanism through which the enhancement is produced by the D (D) over bar + c.c. open channel effects. Our result shows that such a possibility cannot be eliminated.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]Astronomy & Astrophysics ; Physics
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语种英语
WOS记录号WOS:000275069000032
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被引频次:20[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/311005/240547
专题中国科学院高能物理研究所_理论物理室_期刊论文
作者单位中国科学院高能物理研究所
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Zhang YJ,Zhao Q,Zhang, YJ,et al. Lineshape of psi (3770) and low-lying vector charmonium resonance parameters in e(+)e(-) -> D(D)over-bar[J]. PHYSICAL REVIEW D,2010,81(3):34011.
APA 张远江,赵强,Zhang, YJ,&Zhao, Q.(2010).Lineshape of psi (3770) and low-lying vector charmonium resonance parameters in e(+)e(-) -> D(D)over-bar.PHYSICAL REVIEW D,81(3),34011.
MLA 张远江,et al."Lineshape of psi (3770) and low-lying vector charmonium resonance parameters in e(+)e(-) -> D(D)over-bar".PHYSICAL REVIEW D 81.3(2010):34011.
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