Σ term in pion electroproduction near threshold

被引：0
|
作者：
Han, BS [1 ]
Cheon, IT
Cheoun, MK
Yang, SN
机构：
[1] Yonsei Univ, Dept Phys, Seoul 120749, South Korea
[2] Natl Taiwan Univ, Dept Phys, Taipei 10764, Taiwan
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 1998年 / 33卷 / 04期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The time component of the Sigma term in pion electroproduction is shown to represent the charged pseudo-scalar quark-density distribution on the nucleon and to manifest itself in the L-0(+) amplitude. In addition, the sum of this time component of the Sigma term and the induced pseudo-scalar term in the axial current appear as the t-channel pion pole in the Born terms for pion electroproduction near threshold.
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页码：394 / 399
页数：6
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