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arXiv 1209.4713hep-phnucl-th
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p波重介子光锥分布振幅的研究

Study of light-cone distribution amplitudes for p-wave heavy mesons

Chien-Wen Hwang

摘要:

本文在一般和重夸克框架下研究了p波重介子的光锥分布振幅。在光阵面方法中,给出了重标量、轴矢量和张量介子的主导扭转光锥分布振幅f_M(u)及其相应的衰变常数f_M。当考虑重夸克极限时,某些衰变常数的关系可以简化。在确定高斯波函数中出现的参数后,计算了相应的衰减常数,并与其它理论方法的结果进行了比较。绘制了曲线,并估计了φ_M(u)的前六阶矩。这些结果都支持重夸克对称性的要求。

英文摘要:

In this paper, a study of light-cone distribution amplitudes for p-wave heavy mesons is presented in both general and heavy quark frameworks. Within the light-front approach, the leading twist light-cone distribution amplitudes, ϕ_M(u) and their relevant decay constants of heavy scalar, axial-vector and tensor mesons, f_M, are formulated. The relations of some decay constants can be simplified when the heavy quark limit is taken into account. After fixing the parameters which appear in a Gaussian wave function, the corresponding decay constants are calculated and compared with those of other theoretical approaches. The curves and the first six ξmoments of ϕ_M(u) are plotted and estimated. These results all endorse the requirements of heavy quark symmetry.

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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