Solution of the Bethe-Salpeter equation for pion-nucleon scattering

被引：40
|
作者：
Lahiff, AD [1 ]
Afnan, IR [1 ]
机构：
[1] Flinders Univ S Australia, Dept Phys, Adelaide, SA 5001, Australia
来源：
PHYSICAL REVIEW C | 1999年 / 60卷 / 02期
关键词：
D O I：
10.1103/PhysRevC.60.024608
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 relativistic description of pian-nucleon scattering based on the four-dimensional Bethe-Salpeter equation is presented. The kernel of the equation consists of s- and u-channel nucleon and Delta(1232) pole diagrams, as well as rho and sigma exchange in the t channel. The Bethe-Salpeter equation is solved by means of a Wick rotation, and good fits are obtained to the s- and p-wave pi N phase shifts up to 360 MeV pion laboratory energy. The coupling constants determined by the fits are consistent with the commonly accepted values in the literature. [S0556-2813(99)05008-6].
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页数：18
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