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Re-study of Nucleon Pole Contribution in J/ψ, → N(-N)π Decay
ZONG Yuan-Yuan; Shen PN(沈彭年); Zou BS(邹冰松); LIU Ji-Feng; LIANG Wei-Hong
Source Publication理论物理通讯(英文版)
Corresponding AuthorZONG,Yuan-Yuan
AbstractWe re-study nucleon pole contribution in J/ψ→ N(-N)π decays by including the imaginary part for the propagator of the off-shell nucleon with energy above πN 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° 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/ψ decay form factor
Indexed ByCNKI
Document Type期刊论文
Recommended Citation
GB/T 7714
ZONG Yuan-Yuan,Shen PN,Zou BS,et al. Re-study of Nucleon Pole Contribution in J/ψ, → N(-N)π Decay[J]. 理论物理通讯(英文版),2006(8):507-513.
APA ZONG Yuan-Yuan,沈彭年,邹冰松,LIU Ji-Feng,&LIANG Wei-Hong.(2006).Re-study of Nucleon Pole Contribution in J/ψ, → N(-N)π Decay.理论物理通讯(英文版)(8),507-513.
MLA ZONG Yuan-Yuan,et al."Re-study of Nucleon Pole Contribution in J/ψ, → N(-N)π Decay".理论物理通讯(英文版) .8(2006):507-513.
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