Flavor SU(3) analysis of charmless $B$ meson decays to two pseudoscalar mesons
Flavor SU(3) analysis of charmless $B$ meson decays to two pseudoscalar mesons
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DOI：
10.1088/1126-6708/2006/12/027
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发表时间：
2006-09
影响因子：
5.4
通讯作者：
C. Chiang;Yu-feng Zhou
中科院分区：
文献类型：
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作者：
C. Chiang;Yu-feng Zhou
在风味SU(3)对称性的框架下，更新和改进了对无碳B→PP衰变的全局拟合度，而不参考从碳素衰变模式测量的SiN 2β。拟合结果直接约束了么正三角形的(，)顶点，并被用来预测所有衰变模式的分支比和CP不对称性，包括BS系统的模式。分析了SU(3)在衰变幅度大小下的不同破缺方案。保留陌生感和改变陌生感的衰变之间的主要破坏效应可以通过包括树木的衰变常数和颜色抑制幅度的比率来解释。从数据拟合的角度考察了对Kπ衰变有新的物理贡献的可能性。
Global fits to charmless B→PP decays in the framework of flavor SU(3) symmetry are updated and improved without reference to the sin 2β measured from the charmonium decay modes. Fit results directly constrain the (,) vertex of the unitarity triangle, and are used to predict the branching ratios and CP asymmetries of all decay modes, including those of the Bs system. Different schemes of SU(3) breaking in decay amplitude sizes are analyzed. The major breaking effect between strangeness-conserving and strangeness-changing decays can be accounted for by including a ratio of decay constants in tree and color-suppressed amplitudes. The possibility of having a new physics contribution to Kπ decays is also examined from the data fitting point of view.