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Re-study of nucleon pole contribution in J/psi -> N(N)over-bar pi decay
Zong Yuan-Yuan; Shen Peng-Nian; Zou Bing-Song; Liu Ji-Feng; Liang Wei-Hong; Zong, YY , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
2006
发表期刊COMMUNICATIONS IN THEORETICAL PHYSICS
ISSN0253-6102
卷号46期号:3页码:507-513
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.
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
关键词Lattice Gauge-theory J/psi p(p)Over-bar-eta Model
学科领域Physics
收录类别SCI
WOS记录号WOS:000240609800021
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/5907
专题理论物理所1978-2010年知识产出
通讯作者Zong, YY , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China
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GB/T 7714
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.
APA Zong Yuan-Yuan,Shen Peng-Nian,Zou Bing-Song,Liu Ji-Feng,Liang Wei-Hong,&Zong, YY , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.(2006).Re-study of nucleon pole contribution in J/psi -> N(N)over-bar pi decay.COMMUNICATIONS IN THEORETICAL PHYSICS,46(3),507-513.
MLA Zong Yuan-Yuan,et al."Re-study of nucleon pole contribution in J/psi -> N(N)over-bar pi decay".COMMUNICATIONS IN THEORETICAL PHYSICS 46.3(2006):507-513.
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