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arXiv 0811.2692hep-ph
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通过分析QCD中的$B\to K_{1}ν\barν$过渡形状因子确定$K_{1} (1270, 1400)$的非对称参数

Asymmetry Parameter of the $K_{1} (1270, 1400)$ by Analyzing the $B\to K_{1}ν\barν$ Transition Form Factors within QCD

M. Bayar, K. Azizi

摘要:

分离$ K_{1}(1270)$和$K_{1}(1400) $态的混合态,用三点QCD求和规则方法计算了$B\to K_{1}(1270, 1400)ν\barν$跃迁的形状因子。的纵向,横向和总的衰减宽度以及不对称性参数,表征轴向的$K_{1}(1270, 1400)$和这些衰变的分支比的偏振进行评估。

英文摘要:

Separating the mixture of the $ K_{1}(1270)$ and $K_{1}(1400) $ states, the $B\to K_{1}(1270, 1400)ν\barν$ transition form factors are calculated in the three-point QCD sum rules approach. The longitudinal, transverse and total decay widths as well as the asymmetry parameter, characterizing the polarization of the axial $K_{1}(1270, 1400)$ and the branching ratio for these decays are evaluated.

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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