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arXiv 1008.3072hep-ph
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B ~+ → K ~+ → K ~+衰变的分析

Analysis of B+- to K+ K- K+- decays

L. Lesniak, A. Furman, R. Kaminski, P. Zenczykowski

摘要:

分析了稀有B衰变到三个带电K介子的过程。用QCD因子分解方法导出了弱衰变振幅。利用K介子标量和矢量形状因子描述了K介子对之间的强末态相互作用。低K+K有效质量分布下的标量形状因子受手征对称性的约束,并与描述两个K介子、两个π介子和四个π介子三个通道之间所有跃迁的耦合通道介子-介子振幅有关。将矢量形状因子拟合到关于e+e碰撞的数据。模型结果与Belle和BaBar数据进行了比较。

英文摘要:

Rare B decays to three charged kaons are analysed. The weak decay amplitudes are derived in the QCD factorization approach. The strong final state interactions between pairs of kaons are described using the kaon scalar and vector form factors. The scalar form factors at low K+K- effective mass distributions are constrained by chiral symmetry and are related to the coupled channel meson-meson amplitudes describing all the transitions between three channels consisting of two kaons, two pions and four pions. The vector form factors are fitted to the data on e+e- collisions. The model results are compared with the Belle and BaBar data.

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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