Pion-Nucleon Sigma Term and Strangeness in Nucleon
CHEN Hong
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, and Department of Physics, Southwest China Normal University, Chongqing 630715
Pion-Nucleon Sigma Term and Strangeness in Nucleon
CHEN Hong
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, and Department of Physics, Southwest China Normal University, Chongqing 630715
Abstract： It is shown that the meson exchange interaction between dynamical quarks generated by the chiral symmetry breaking is of crucial importance to explain the empirical value of the pion-nucleon σ-term. The large contribution of ss and gluon to a nucleon mass is predicted by using the QCD energy-momentum trace anomaly from the pion-nucleon σ-term.
CHEN Hong. Pion-Nucleon Sigma Term and Strangeness in Nucleon[J]. 中国物理快报, 1997, 14(4): 252-254.
CHEN Hong. Pion-Nucleon Sigma Term and Strangeness in Nucleon. Chin. Phys. Lett., 1997, 14(4): 252-254.
1997, Vol. 14 
