Charmonium States in QCD-Inspired Quark Potential Model Using Gaussian Expansion Method
Charmonium States in QCD-Inspired Quark Potential Model Using Gaussian Expansion Method
复制标题
采用高斯展开法的 QCD 启发夸克势模型中的仄态
DOI：
10.1007/s00601-012-0478-z
复制
发表时间：
2012-06
期刊：
影响因子：
1.6
通讯作者：
Chen, Hong
中科院分区：
文献类型：
--
作者：
Cao, Lu;Yang, You-Chang;Chen, Hong
通过比较纯标量和标量矢量混合线性禁闭势，我们研究了自旋相关势的非微扰处理下Charmonium系统的质量谱和电磁过程。结果表明，标量-矢量混合禁闭对重现质量谱和衰变宽度具有重要意义，其中矢量分量预计约为22%。通过全势哈密顿量得到的状态波函数，缓解了J/ψ和ψ‘在M1辐射跃迁中长期存在的差异。这项工作也为丰富的类高碳态中可能的cc̄态提供了检验和建议。特别是，新观察到的X(4160)和X(4350)是在Charmonium家族的质谱图ASM(21D2)=4164.9 MeV和M(33P2)=4352.4 MeV中发现的，它们分别强烈支持JPc=2−+，2++的归属。还从理论上预测了相应的辐射跃迁、轻子衰变宽度和双光子衰变宽度，为进一步的实验研究做了准备。
We investigate the mass spectrum and electromagnetic processes of charmonium system with the nonperturbative treatment for the spin-dependent potentials, comparing the pure scalar and scalar-vector mixing linear confining potentials. It is revealed that the scalar-vector mixing confinement would be important for reproducing the mass spectrum and decay widths, and therein the vector component is predicted to be around 22 %. With the state wave functions obtained via the full-potential Hamiltonian, the long-standing discrepancy in M1 radiative transitions ofJ/ψ and ψ′ are alleviated. This work also provides an inspection and suggestion for the possible cc̄ states among the copious higher charmonium-like states. Particularly, the newly observedX(4160) andX(4350) are found in the charmonium family mass spectrum asM(21D2) = 4164.9 MeV andM(33P2) = 4352.4 MeV, which strongly favor theJPC= 2−+, 2++assignments respectively. The corresponding radiative transitions, leptonic and two-photon decay widths have been also predicted theoretically for the further experimental search.
登录
查看更多内容
DOI：
10.1103/physrevlett.98.132002
发表时间：
2006-12
期刊：
--
影响因子：
--
作者：
C. Collaboration
通讯作者：
C. Collaboration
影响因子：
5
作者：
Yong-Liang Ma
通讯作者：
Yong-Liang Ma
DOI：
10.1016/b978-0-444-89316-1.50015-5
发表时间：
1992
期刊：
Current Physics–Sources and Comments
影响因子：
--
作者：
E. Eichten;K. Gottfried;T. Kinoshita;K. Lane;T. Yan
通讯作者：
E. Eichten;K. Gottfried;T. Kinoshita;K. Lane;T. Yan
影响因子：
8.6
作者：
C. Shen;C. Yuan;H. Aihara;K. Arinstein;T. Aushev;A. Bakich;V. Balagura;E. Barberio;A. Bay
通讯作者：
C. Shen;C. Yuan;H. Aihara;K. Arinstein;T. Aushev;A. Bakich;V. Balagura;E. Barberio;A. Bay
影响因子：
5
作者：
Stanley F. Radford;W. Repko
通讯作者：
Stanley F. Radford;W. Repko