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arXiv 0811.0648hep-ph
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1 S和2S重夸克偶素态夸克分布振幅的研究

Study of quark distribution amplitudes of 1S and 2S heavy quarkonium states

Chien-Wen Hwang

摘要:

本文用高斯型波函数研究了1 S和2S重夸克偶素态的夸克分布振幅。对衰减常数公式的横动量$p_\perp$积分进行了解析计算。然后得到夸克分布振幅。此外,还计算了$ξ$ -矩。在确定了夸克分布振幅中出现的有关参数后,绘制了1 S和2S重夸克偶素态的夸克分布振幅曲线。最后,将该方法的数值结果与其他理论预测进行了比较。

英文摘要:

In this paper, the quark distribution amplitudes of 1S and 2S heavy quarkonium states are studied in terms of Gaussian-type wave functions. The transverse momenta $p_\perp$ integrals of the formulae for the decay constant are performed analytically. Then the quark distribution amplitudes are obtained. In addition, the $ξ$-moments are also calculated. After fixing the relevant parameters appearing in the quark distribution amplitude, the curves of the quark distribution amplitude for 1S and 2S heavy quarkonium states are plotted. Finally, the numerical results of this approach are compared with the other theoretical predictions.

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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