Nucleon resonances in πN → η′N and J/ψ → p(p)over-barη′

被引：3
|
作者：
Cao, Xu [1 ,2 ,3 ,4 ,5 ]
Xie, Ju-Jun [1 ,2 ,3 ,4 ,5 ]
机构：
[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
[2] Chinese Acad Sci, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China
[3] Chinese Acad Sci, KITPC, Beijing 100190, Peoples R China
[4] Chinese Acad Sci, Inst Modern Phys, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Peoples R China
[5] Lanzhou Univ, Lanzhou 730000, Peoples R China
来源：
CHINESE PHYSICS C | 2016年 / 40卷 / 08期
基金：
中国国家自然科学基金;
关键词：
nucleon resonances; isobar model; partial wave analysis; COVARIANT TENSOR FORMALISM; PARTIAL-WAVE ANALYSIS; PP-ETA'; DECAYS; MODEL; SCATTERING; N-ASTERISK(1535); PHOTOPRODUCTION; ENERGIES; PSI(2S);
D O I：
10.1088/1674-1137/40/8/083103
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We are aiming to study the J/psi -> p (p) over bar eta' decay in an isobar model and the effective Lagrangian approach on the basis of the coupling constants extracted from the pi N -> eta'N reaction. After a careful exploration of the contributions of the S-11(1535), P-11(1710), P-13 (1900), S-11(2090) and P-11(2100) resonances, we conclude that either a subthreshold resonance or a broad P -wave state in the near threshold range seems to be indispensable to describe the present data of the pi N -> eta'N. Furthermore, at least one broad resonance above eta'N threshold is preferred. With this detailed analysis, we give the invariant mass spectrum and Dalitz plot of the J/psi -> pp eta' decay for the purpose of assisting the future detailed partial wave analysis. It is found that the J/psi -> pp eta' data are useful for disentangling the above or below threshold resonant contribution, though it still further needs the differential cross section data of pi N -> eta'N to realize some of the resonant and non -resonant contribution.
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收藏
页数：11
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