Low energy QCD Lagrangian description of strange meson photoproduction off the proton  

作　　者：周丽娟 马维兴 彭光雄 

机构地区：[1]Department of Information and Computing Science, Guangxi University of Technology, Liuzhou 545006, China [2]Department of Information and Computing Science, Guangxi University of Technology, Liuzhou 545006, China Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China [3]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, China

出　　处：《Science China Mathematics》2002年第5期671-680,共10页中国科学：数学（英文版）

基　　金：The work was supported in part by the National Natural Science Foundation of China ( Grant Nos. 19975053, 19835010, 10075081 and 19905011).

摘　　要：Based on low energy QCD Lagrangian, and using wave function of baryon in [SuSF(6)? 0(3)]sym.? Suc(3) quark model, strange meson photoproduction off the proton is studied. Calculations of cross sections and p-polarization for γ + p → K + + Λ reaction are performed. The theoretical results show that, compared to traditional phenomenological models, the low energy QCD Lagrangian provides a successful description of the reaction process with only one free parameter, strongly coupling constant αm.Based on low energy QCD Lagrangian, and using wave function of baryon in [SuSF=(6) O(3)]sym.() Suc(3) quark model, strange meson photoproduction off the proton is studied. Calculations of cross sections and p-polarization for γ + p→ K+ + ∧ reaction are performed. The theoretical results show that, compared to traditional phenomenological models, the low energy QCD Lagrangian provides a successful description of the reaction process with only one free parameter, strongly coupling constant αm.

关 键 词：QCD  STRANGE meson  photoproduction. 

分 类 号：O571[理学—粒子物理与原子核物理]