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arXiv 1104.3891hep-ph
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具有限制势的两体束缚态问题的解

Solution of Two-Body Bound State Problems with Confining Potentials

M. R. Hadizadeh, Lauro Tomio

摘要:

利用约束势在动量空间中求解齐次Lippmann-Schwinger积分方程。由于限制势在大距离处是无界的,它们导致小动量处的奇异性。为了消除积分方程核的奇异性,使用了势的正则化形式。作为该方法的一个应用,计算了线性和二次约束势下重夸克偶素(由重夸克和反夸克组成的介子$(Υ(b\bar{b}), ψ(c\bar{c}))$)的质量谱。计算结果与位形空间和实验结果吻合较好。

英文摘要:

The homogeneous Lippmann-Schwinger integral equation is solved in momentum space by using confining potentials. Since the confining potentials are unbounded at large distances, they lead to a singularity at small momentum. In order to remove the singularity of the kernel of the integral equation, a regularized form of the potentials is used. As an application of the method, the mass spectra of heavy quarkonia, mesons consisting from heavy quark and antiquark $(Υ(b\bar{b}), ψ(c\bar{c}))$, are calculated for linear and quadratic confining potentials. The results are in good agreement with configuration space and experimental results.

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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