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题名: Re-study of nucleon pole contribution in J/psi -> N(N)over-bar pi decay
作者: Zong Yuan-Yuan ;  Shen Peng-Nian ;  Zou Bing-Song ;  Liu Ji-Feng ;  Liang Wei-Hong
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2006
卷号: 46, 期号:3, 页码:507-513
关键词: LATTICE GAUGE-THEORY ;  J/PSI ;  P(P)OVER-BAR-ETA ;  MODEL
学科分类: Physics
通讯作者: Zong, YY , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
部门归属: Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; Guangxi Normal Univ, Dept Phys, Guilin 541004, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Were-study nucleon pole contribution in J/psi -> N (N) over bar pi decays by including the imaginary part for the propagator of the off-shell nucleon with energy above pi N threshold. It is found that when including the imaginary part in the propagator, the branching ratio of the decay width will descend about 11% compared with the result without including the imaginary part, no matter whether including the off-shell form factors or not. It also leads to a phase of up to 25 degrees for the off-shell nucleon propagator at invariant mass around 1400 MeV. This effect needs to be considered for detailed partial wave analysis of N-* resonances around this mass region.
收录类别: SCI
WOS记录号: WOS:000240609800021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5907
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zong Yuan-Yuan,Shen Peng-Nian,Zou Bing-Song,et al. Re-study of nucleon pole contribution in J/psi -> N(N)over-bar pi decay[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2006,46(3):507-513.
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