Gauge-invariant approach to meson photoproduction including the final-state interaction

被引：72

作者：

Haberzettl, H. ^{[1
]}

Nakayama, K.

Krewald, S.

机构：

[1] George Washington Univ, Dept Phys, Ctr Nucl Studies, Washington, DC 20052 USA

[2] Forschungszentrum Julich, Inst Kernphys Theorie, D-52425 Julich, Germany

[3] Univ Georgia, Dept Phys & Astron, Athens, GA 30602 USA

来源：

PHYSICAL REVIEW C | 2006年 / 74卷 / 04期

关键词：

D O I：

10.1103/PhysRevC.74.045202

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：

A fully gauge-invariant (pseudoscalar) meson photoproduction amplitude off a nucleon including the final-state interaction is derived. The approach based on a comprehensive field-theoretical formalism developed earlier by one of the authors replaces certain dynamical features of the full interaction current by phenomenological auxiliary contact currents. A procedure is outlined that allows for a systematic improvement of this approximation. The feasibility of the approach is illustrated by applying it to both the neutral and charged pion photoproductions.

引用

页数：13

共 61 条

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