The π-nucleus optical potential to O(p5) in Chiral Perturbation Theory

被引：4
作者：
Girlanda, L
Rusetsky, A
Weise, W
机构：
[1] ECT, I-38050 Trento, Italy
[2] Univ Bonn, HISKP, D-53115 Bonn, Germany
[3] Tbilisi State Univ, HEPI, Tbilisi, Georgia
[4] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany
来源：
NUCLEAR PHYSICS A | 2005年 / 755卷
关键词：
D O I：
10.1016/j.nuclphysa.2005.03.079
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：
We describe the calculation of the pi-nucleus optical potential to NLO in Chiral Perturbation Theory (ChPT) within a new formulation of the effective theory in the presence of a nuclear background, characterized by a static, non-uniform distribution of the baryon number, describing the finite nucleus. This formulation reduces to the conventional In-medium ChPT in the case of a uniform distribution. In this way we are able to identify unambiguously the nuclear finite size effects and disentangle the S-, P- and D-wave contributions to the optical potential without invoking the local density approximation.
引用
收藏
页码：653C / 656C
页数：4
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