摘要
假定BES合作组在辐射衰变J/ψ-γpp-中观测到的pp-谱的增强是由于存在一个pp-的分子态,用线性σ 模型计算了它的束缚能和寿命．具体考虑了这种增强现象是由于pp-可能形成一个S波或P波共振态,并把计算 结果和实验数据做了比较．与氚核不同,由于pp-可以通过s道湮没,因此通过研究它的总宽度可以获得线性σ模 型及其相关问题的信息．
Provided the enhancement in the pp spectrum in radiative decay J/ψ,γppTPP^- observed by the BES collaboration is due to an existence of a pp molecular state, we calculate its binding energy and lifetime in the linear σ model. Concretely, we consider a possibility that the enhancement is due to a pp^- resonance which is in either S-wave or P-wave structure and compare our results with the data. Moreover, pp can annihilate at s-channel which is absent in deuteron, thus by studying the total width of the pp bound state, we may gain more information about the linear σ model and some concerned issues.
出处
《高能物理与核物理》
CSCD
北大核心
2006年第1期1-12,共12页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金(10475202,10475089,10435080)高等学校博士学科点专项科研基金中国科学院知识创新工程重大方向性项目(KJCX2-SW-N02)中国科学院高能物理研究所创新基金(U529)~~
