N巴黎势和可能的p共振态(英文)  

Paris N Potential and the Possible Resonance States of p

作　　者：曾卓全[1] 沈彭年[1] 丁亦兵[2] 姜焕清[1] 李学潜[3] 陆晓[4] 

机构地区：[1]中国科学院高能物理研究所,北京100049 [2]中国科学院研究生院,北京100049 [3]南开大学物理系,天津300071 [4]广西师范大学物理与信息工程学院,桂林541004

出　　处：《高能物理与核物理》2005年第6期537-542,共6页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10475089,10435080,10375090,90103020,10147202);中国科学院知识创新重大项目(KJCX 2S WN02);中国科学院高能所创新基金(U529);广西省自然科学基金(0339035)资助~~

摘　　要：通过求解N巴黎光学势的复薛定谔方程,研究了N系统的近阈束缚和共振行为,得到了一个p系统的13P0共振态.发现其能量和宽度与最近BES用Breit Wigner(B W)公式分析J/ψ→γp衰变的实验数据给出的结果相容.讨论了这一结果的含义及进一步研究的建议.By solving the complex Schrdinger equation with the phenomenological Paris optical potential between nucleon(N) and antinucleon(),the near-threshold binding and resonant behaviors of the p- system are studied. As the result,a 13P 0 resonance state of p is obtained. It is found that the energy and width of the state are compatible with the BES data in which the observed enhancement in the J/ψ→γp decay was fitted by a Breit-Wigner (B-W) formula either in the S-wave or in the P-wave.The indication of the results and the suggestion for the further theoretical investigation are discussed.

关 键 词：复薛定谔方程 巴黎光学势 近阈束缚 共振态 原子核衰变 

分 类 号：O571.3[理学—粒子物理与原子核物理]