欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
用夸克模型结合Ds,Ds^＊,讨论窄共振态Dsj^＊（2317）,Dsj（2460）.除η-π^0混合角由Ds^＊衰变宽度给出,所有的参数均取自Godfrey和Isgur的夸克模型.得到的电磁衰变宽度与实验数据和其他作者的结果相一致.但是,与现有的实验结果比较,Dsj^＊（2317）,Dsj（2460）的π介子衰变宽度要小一个数量级.我们怀疑简单的手征夸克-π轴矢相互作用的哈密顿量不适合于Dsj^＊（2317）,Dsj（2460）的强衰变.
英文摘要：
We study the decay widths of the narrow resonances Dsj^＊ （2317） and Dsj （2460） in the chiral quark model, together with the well-known D^＊ and Ds^＊ mesons. All the parameters in our calculation are taken from Godfrey and Isgur＇s quark model except the π^0-η mixing angle which is fixed by the Ds^＊ decay widths.The calculated electromagnetic decay widths agree with those from other groups and the experimental data available quite well. However, the pionic decay widths of Dsj（2317） and Dsj（2460） are too small to fit the experimental data. We suspect that the simple chiral quark pion axial-vector interaction Hamiltonian is not suitable for hadron strong decays of Dsj（2317） and Dsj（2460）.
同期刊论文项目
同项目期刊论文
期刊信息
位置：