Effects of Condensates of Higher Dimensional Operators on Quarkonium System
LIANG Wei-hong1,2, LIU Ji-feng2, SHEN Peng-nian1,3,4, Li Xue-qian5
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2Department of Physics, Guangxi Normal University, Guilin 541004
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
5Department of Physics, Nankai University, Tianjin 300071
Effects of Condensates of Higher Dimensional Operators on Quarkonium System
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2Department of Physics, Guangxi Normal University, Guilin 541004
3Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080
4Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000
5Department of Physics, Nankai University, Tianjin 300071
Abstract： The effect of higher dimensional quark-gluon condensates on the effective quark-antiquark potential is investigated. In this scenario, cc and bb spectra are studied. It is shown that the vacuum condensates of the d = 5 and d = 6 operators, where d denotes the dimension of the operator, still cause notable effects. The perturbative loop contributions from the s-channel scattering and t-channel annihilation processes to the potential are almost the same. These contributions are opposite in sign to the non-perturbative contributions of the d = 4 operator condensates.
1999, Vol. 16 
