Exploring the light-quark interaction  

作　　者：常雷 Ian C. CLOЁT Bruno El-BENNICH Thomas KLHN Craig D. ROBERTS 

机构地区：[1]Institute of Applied Physics and Computational Mathematics [2]Department of Physics, University of Washington, Seattle WA 98195, USA [3]Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA [4]Department of Physics, Peking University

出　　处：《Chinese Physics C》2009年第12期1189-1196,共8页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10705002);Department of Energy, Office of Nuclear Physics(DE-FG03-97ER4014, DE-AC02-06CH11357)

摘　　要：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.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.

关 键 词：Bethe-Salpeter equations BOUND-STATES CONFINEMENT dynamical chiral symmetry breaking Dyson-Schwinger equations Faddeev equation nucleon electromagnetic form factors 

分 类 号：O572.33[理学—粒子物理与原子核物理]