Exploring the light-quark interaction

• Published in: Chinese physics C Vol. 33; no. 12; pp. 1189 - 1196
• Main Author: 常雷 lan C. CLOET Bruno E1-BENNICH Thomas KLAHN Craig D. ROBERTS
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.12.2009; Institute of Applied Physics and Computational Mathematics,Beijing 100094,China%Department of Physics,University of Washington,Seattle WA 98195,USA%Physics Division,Argonne National Laboratory,Argonne,Illinois 60439,USA%Department of Physics,Peking University,Beijing 100871,China
• Subjects: 夸克禁闭; 手征对称性; 核子结构; 理论课程; 电荷分布; 相互作用; 轻夸克; 量子色动力学; nucleon electromagnetic form factors; Bethe-Salpeter equations; confinement; Dyson-Schwinger equations; Faddeev equation; dynamical chiral symmetry breaking; bound-states
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/33/12/022

Two basic motivations for an upgraded JLab facility are the needs： to determine the essential nature of light-quark confinement and dynamical chiral symmetry breaking （DCSB）; and to understand nucleon structure and spectroscopy in terms of QCD＇s elementary degrees of freedom. During the next ten years a programme of experiment and theory will be conducted that can address these questions. We present a Dyson- Schwinger equation perspective on this effort with numerous illustrations, amongst them： an interpretation of string~breaking; a symmetry-preserving truncation for mesons; the nucleon＇s strangeness σ-term; and the neutron＇s charge distribution.