Strange Meson Photo-production and Its Associated Radiative Capture on Proton in Low-Energy QCD Lagrangian  

作　　者：ZHOU Li-Juan MA Wei-Xing 

机构地区：[1]Collaboration Group of Hadron Physics and Non-perturbative QCD Study, Guangxi University of Technology, Liuzhou 545006, China [2]Institute of High Energy Physics, the Chinese Academy of Sciences, P.O. Box 918, Beijing 100049, China

出　　处：《Communications in Theoretical Physics》2006年第3X期493-500,共8页理论物理通讯（英文版）

基　　金：The project supported in part by National Natural Science Foundation of China under Grant Nos. 10247004 and 10565001 and the Natural Science Foundation of Guangxi Province of China under Grant Nos. 0575020, 0481030 and 0542042

摘　　要：Based on the low energy QCD Lagrangian theory and the crossing symmetry relation, strange meson photoproduction and its associated radiative capture on the proton are investigated in the [SUSF（6） × O（3）]sym . × SUc（3） quark mode/of baryon structure with only one same input parameter, the only strong coupling constant aM. Calculations for the cross sections, p-polarization of γ ＋ P → K^＋ ＋ A reaction and the branching ratios for K^- radiative capture of K^- ＋ p →　γ ＋ Y with Y = A, ∑^0 are performed. Good agreements to data are obtained and the results show that, compared to traditional phenomenological models, the low energy QCD Lagrangian theory provides a successful, unifled description of the strange meson photo-production and its associated radiative capture.

关 键 词：low-energy QCD Lagrangian quarks and gluons quark structure of baryon strange meson photoproduction K^- meson radiative capture 

分 类 号：O571[理学—粒子物理与原子核物理] O41[理学—物理]