The role of the Roper in chiral perturbation theory

被引：13

作者：

Long, Bingwei ^{[1
,2
]}

van Kolck, U. ^{[3
,4
]}

机构：

[1] EBAC, Jefferson Lab, Newport News, VA 23606 USA

[2] European Ctr Theoret Studies Nucl Phys & Related, I-38123 Villazzano, TN, Italy

[3] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA

[4] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil

来源：

NUCLEAR PHYSICS A | 2011年 / 870-71卷

关键词：

Chiral perturbation theory; Effective field theory; The Roper resonance; PION-NUCLEON SCATTERING; RESONANCES; DYNAMICS; FORCES; MASS;

D O I：

10.1016/j.nuclphysa.2011.09.002

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 include the Roper excitation of the nucleon in a version of heavy-baryon chiral perturbation theory recently developed for energies around the delta resonance. We find significant improvement in the P-11 channel. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：72 / 82

页数：11

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