Potential model calculations and predictions for heavy quarkonium
Potential model calculations and predictions for heavy quarkonium
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DOI：
10.1103/physrevd.75.074031
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发表时间：
2007-01
影响因子：
5
通讯作者：
Stanley F. Radford;W. Repko
中科院分区：
文献类型：
--
作者：
Stanley F. Radford;W. Repko
（日期：2008 年 2 月 2 日）我们在势模型中研究了粲和 upsilon 系统的光谱和衰变，该模型由相对论动能项、线性限制项（包括其标量和矢量相对论校正）和完整的微扰单环量子色动力短距离势组成。各种状态的质量和波函数是使用变分技术获得的，这使我们能够比较势的微扰和非微扰处理的结果。除了将质谱、辐射宽度和轻子宽度与现有数据进行比较之外，我们还讨论了势能中包含的参数误差、混合对轻子宽度的影响、限制势的洛伦兹性质以及最近发现的类粲态的可能解释。 1．介绍
(Dated: February 2, 2008)We investigate the spectroscopy and decays of the charmonium and upsilon systems in a potentialmodel consisting of a relativistic kinetic energy term, a linear confining term including its scalarand vector relativistic corrections and the complete perturbative one-loop quantum chromodynamicshort distance potential. The masses and wave functions of the various states are obtained usinga variational technique, which allows us to compare the results for both perturbative and nonper-turbative treatments of the potential. As well as comparing the mass spectra, radiative widths andleptonic widths with the available data, we include a discussion of the errors on the parameterscontained in the potential, the effect of mixing on the leptonic widths, the Lorentz nature of theconfining potential and the possible c¯cinterpretation of recently discovered charmonium-like states.1. INTRODUCTION