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.
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页码：L131 / L137
页数：7
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