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arXiv 0906.1287hep-ph
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矢量介子与重介子的强相互作用

The Vector Meson And Heavy Meson Strong Interaction

Peng-Zhi Huang, Liang Zhang, Shi-Lin Zhu

摘要:

在重夸克有效理论的首阶轻锥QCD求和规则的框架下,计算了轻矢量介子与重介子之间的耦合常数。求和规则随Borel参数和连续阈值的变化而非常稳定。提取的耦合将有助于研究重介子分子的可能态。它们也有助于解释X(3872)、Y(4260)和Z(4430)通过耦合道机制接近两个粲介子的阈。

英文摘要:

We calculate the coupling constants between the light vector mesons and heavy mesons within the framework of the light-cone QCD sum rule in the leading order of heavy quark effective theory. The sum rules are very stable with the variations of the Borel parameter and the continuum threshold. The extracted couplings will be useful in the study of the possible heavy meson molecular states. They may also helpful in the interpretation of the proximity of X(3872), Y(4260) and Z(4430) to the threshold of two charmed mesons through the couple-channel mechanism.

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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