Extraction of electrostrong parameters of N*(1520) from eta photoproduction

被引：35

作者：

Mukhopadhyay, NC ^{[1
]}

Mathur, N ^{[1
]}

机构：

[1] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA

来源：

PHYSICS LETTERS B | 1998年 / 444卷 / 1-2期

关键词：

eta meson; N* (1520) and N* (1535) resonances; polarization observables; effective Lagrangian;

D O I：

10.1016/S0370-2693(98)01372-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recently obtained polarized target and photon asymmetry data in era photoproduction are shown to be very powerful, in conjunction with the differential cross-section data, in yielding model-insensitive constraints on the electrostrong parameters for the excitation and decay of the N*(1520) resonance. The extracted ratio of its electromagnetic helicity amplitudes, A(3/2)/A(1/2), provides a critical test for the QCD-inspired hadron models. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：7 / 13

页数：7

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