摘要
使用量子场论中准势途径的相对论夸克模型,计算了重夸克偶素的质量谱.所采用的同味正反夸克间的有效相互作用包括通常的直接单胶子交换、单胶子湮没及具有相对论修正的标量和矢量线性禁闭的混合.得到了与实验上肯定的数据符合较好的拟合计算结果,并讨论了湮没项和相对论修正各项对能谱超精细分裂的作用.
The mass spectra of heavy quarkonia are calculated with the relativistic quark model. The effective interaction between a quark and an antiquark of the same flavor is assumed to be the sum of the one-gluon exchange with the inclusion of annihilation terms and the mixture of scalar and vector linear confining potentials with the relativisic corrections. The effects of the annihilation and the relativistic correction terms on the hyperfine splittings of quarkonium states are discussed in detail, and a good fit to the observed experimental data is obtained on the mass spectra.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第3期1136-1141,共6页
Acta Physica Sinica
基金
国家自然科学基金
