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.

引用

页数：11

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