中能K^+核弹性散射光学势参数  

Intermediate Energy K^+ Nucleus Elastic Scattering Optical Potential Parameters

作　　者：谭玉红[1] 宁平治[1] 蔡崇海 

机构地区：[1]南开大学物理系,天津300071 [2]中国科学院理论物理研究所,北京100080

出　　处：《高能物理与核物理》1998年第12期1136-1142,共7页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金!19575028

摘　　要：采用包含库仑场影响的一级修正的eikonal相移研究了入射动量为715MeV／C的K＋介子与6Li、（12）C核散射及入射动量为800MeV／c的K＋介子与（12）C、（40）Ca核散射的微分截面，通过理论微分截面与相应实验数据的拟合，得到了最佳光学势参数，为K＋核散射的微观研究提供一定依据．用得到的光学势计算了相应散射过程的总截面，并与实验值作了比较．Elastic differential cross sections for K+ mesons scattered from (12)C and 6Li targets at an incident momentum of 715 MeV/c and from(12). (40)Ca targets at an incident momentum of 800 MeV/c have been studied in this paper. The method of the eikonal phase shift with the first-order correction including the deflection effect due to the coulomb field has been used in the work. By the fitting the theoretical differentical cross sections with the corresponding experimental results we have got the optimum optical potential parameters, which provides some Kind of bases for the microscopic shudy of K+ elastic scattering. We gained the total cross sections for the correspondiny scatterings by using the ophcal potential, and compared itwith the experimental data.

关 键 词：K^+核散射 光学势 弹性散射 微分截面 

分 类 号：O571.418[理学—粒子物理与原子核物理]