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arXiv 1102.4970hep-ph
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QCD启发的夸克模型中Isgur-Wise函数斜率和曲率的界

Bounds on the slope and curvature of Isgur-Wise function in a QCD inspired quark model

B. J. Hazarika, D. K. Choudhury

摘要:

我们早先所采用的QCD激发势模型最近被修正,在线性库仑势中加入了一个附加因子“c”。虽然它庆幸的标准禁闭参数b = 0.183GeV 2,不同于以往的工作,它仍然没有达到解释的Isgur-明智的功能,没有特别调整的强耦合常数的B介子。在这项工作中,我们确定的因素'c'从实验值的衰变常数和质量,并表明现实约束'c' yields绑定上的强耦合常数,以及斜率和曲率的Isgur-Wise函数允许更多的灵活性的模型。

英文摘要:

The QCD inspired potential model persued by us earlier has been recently modified to incorporate an additional factor 'c' in the linear cum Coulomb potential. While it felicitates the inclusion of standard confinement parameter b = 0.183GeV 2, unlike in previous work, it still falls short of explaining the Isgur-Wise function for the B mesons without adhoc adjustment of the strong coupling constant. In this work, we determine the factor 'c' from the experimental values of decay constants and masses and show that the reality constraint on 'c' yeilds bounds on the strong coupling constant as well on slope and curvature of Isgur-Wise function allowing more flexibility to the model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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