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题名: IMPROVED QCD-MOTIVATED HEAVY-QUARK POTENTIALS WITH EXPLICIT DELTA(MS)BAR DEPENDENCE
作者: CHEN, YQ ;  KUANG, YP
刊名: PHYSICAL REVIEW D
出版日期: 1992
卷号: 46, 期号:3, 页码:1165-1171
关键词: LATTICE GAUGE-THEORY ;  QUANTUM CHROMODYNAMICS ;  SPIN SPLITTINGS ;  PARAMETER ;  SYSTEMS ;  STATES
学科分类: Physics
通讯作者: CHEN, YQ , TSING HUA UNIV,INST MODERN PHYS,BEIJING 100084,PEOPLES R CHINA.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; WORLD LAB,CHINA CTR ADV SCI & TECHNOL,BEIJING 100080,PEOPLES R CHINA
英文摘要: We propose two models for a heavy-quark potential with possible natural QCD interpretations. The potentials approach the two-loop perturbative QCD formula at short distance and a linear confining potential at large distance, and their predicted ccBAR and bbBAR spectra all fit the data very well for LAMBDA(MSBAR) in the range 100-500 MeV, where MSBAR denotes the modified minimal subtraction scheme. Furthermore, the potentials are described directly in coordinate space with explicit LAMBDA(MSBAR) dependence so that they are convenient for practical calculations. Some of their phenomenological predictions are given, especially, in the picture regarding a confining potential as a scalar exchange. The predicted masses of psi (1 P-1(1)) and gamma(1 P-1(1)) are higher than the center-of-gravity values of the 1 3P(J) states by 0.9-1.8 MeV and 0.4-0.7 MeV, respectively, for LAMBDA(MSBAR) in the range 100-200 MeV.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12141
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
CHEN, YQ,KUANG, YP. IMPROVED QCD-MOTIVATED HEAVY-QUARK POTENTIALS WITH EXPLICIT DELTA(MS)BAR DEPENDENCE[J]. PHYSICAL REVIEW D,1992,46(3):1165-1171.
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