MESON EXCHANGE PI-N MODEL AND NEUTRAL PION-PHOTOPRODUCTION FROM PROTONS NEAR THRESHOLD

被引：42

作者：

LEE, CC ^{[1
]}

YANG, SN ^{[1
]}

LEE, TSH ^{[1
]}

机构：

[1] ARGONNE NATL LAB,ARGONNE,IL 60439

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 1991年 / 17卷 / 08期

关键词：

D O I：

10.1088/0954-3899/17/8/003

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：

Starting from a three-dimensional reduction of the Bethe-Salpeter equation, a meson exchange pi-N model is constructed. The resulting pi-N potential includes the direct and exchange nucleon terms, sigma and rho exchanges terms, and direct and exchange DELTA terms. Reasonable fits to the pi-N low-energy phaseshifts are obtained. The constructed meson exchange potential is then used to evaluate rescattering effects in the dipole amplitude E0 + of pi-0 photoproduction from protons near threshold. The results are close to the most recent Mainz data.

引用

页码：L131 / L137

页数：7

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