The neutral pion photoproduction on the proton near threshold

被引：0

作者：

Cheon, IT ^{[1
]}

Jeong, MT ^{[1
]}

机构：

[1] Yonsei Univ, Dept Phys, Seoul 120749, South Korea

来源：

HADRON AND NUCLEAR PHYSICS WITH ELECTROMAGNETIC PROBES | 2001年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The E-0+ and M1 +/- amplitudes for p(gamma, pi (0))p have been calculated by taking the vector mesons into account in the pole model of t-channel. A conclusion is led that the rescattering process below the pi (+) threshold plays a key role in this process. Our results are E0+ = -1.23 x 10(-3)m(pi+)(-1), M1+ = 7.56 x 10(-3)m(pi+)(-3)kq and M1- = -2.15 x 10(-3)m(pi+)(-3)kq at the pi (+) threshold. The PCAC hypothesis is well restored in our frame of calculation.

引用

页码：81 / 86

页数：6

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