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Re-study of nucleon pole contribution in J/psi -> N(N)over-bar pi decay
Zong YY(宗媛媛); Shen PN(沈彭年); Zou BS(邹冰松); Zong, YY; Shen, PN; Zou, BS; Liu, JF; Liang, WH
Corresponding AuthorChinese 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
AbstractWere-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.
KeywordJ/psi decay form factor
Subject AreaPhysics
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000240609800021
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Document Type期刊论文
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Zong YY,Shen PN,Zou BS,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 宗媛媛.,沈彭年.,邹冰松.,Zong, YY.,Shen, PN.,...&Liang, WH.(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 宗媛媛,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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