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.

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页码：653C / 656C

页数：4

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