Two-nucleon one-loop corrections to pion double charge exchange within heavy baryon chiral perturbation theory

被引：1
|
作者：
Misra, A [1 ]
Koltun, DS
机构：
[1] Indian Inst Technol, Kanpur 208016, Uttar Pradesh, India
[2] Univ Rochester, Rochester, NY 14627 USA
来源：
PHYSICAL REVIEW C | 2000年 / 61卷 / 02期
关键词：
D O I：
10.1103/PhysRevC.61.024003
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：
One-loop corrections at the two-nucleon level to pion double charge exchange scattering off a nuclear target at threshold are calculated within the framework of heavy baryon chiral perturbation theory. An estimate for the (two-nucleon) one-loop correction is obtained in the static limit and using an impulse approximation. We find a small (1.6%) increase relative to the leading order tree graphs.
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页数：20
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