论文标题
分散$ππ\ rightarrow k \ bar k $振幅和巨大的CP违反B到LHCB的三个轻膜衰变
Dispersive $ππ\rightarrow K\bar K$ amplitude and giant CP violation in B to three light-meson decays at LHCb
论文作者
论文摘要
LHCB合作最近报告了单个振幅的CP违规效应最大，以及在几个$ B $ - 米森衰减中陷入三个无魅力的轻型介子中的其他巨型CP不对称效应。还声称这主要是由于$ππ\ rightarrow k \ bar k $在最终状态下，特别是在1至1.5 GEV地区。在这些分析中，$ππ\ rightarrow k \ bar k $振幅在默认情况下是根据$ππ$弹性散射幅度估算的，并且没有描述现有的$ππ\ rightarrow k \ bar k $散射数据。在这里，我们展示了$ππ\ rightarrow k \ bar k $数据的最近独立于模型的分散分析可以在LHCB形式主义中轻松实现。这导致对不对称性的更准确描述，同时与测得的散射幅度一致，并确认了Hadronic最终状态相互作用的重要作用，为更多的详细分析铺平了道路。
The LHCb collaboration has recently reported the largest CP violation effect from a single amplitude, as well as other giant CP asymmetries in several $B$-meson decays into three charmless light mesons. It is also claimed that this is predominantly due to $ππ\rightarrow K\bar K$ rescattering in the final state, particularly in the 1 to 1.5 GeV region. In these analyses the $ππ\rightarrow K\bar K$ amplitude is by default estimated from the $ππ$ elastic scattering amplitude and does not describe the existing $ππ\rightarrow K\bar K$ scattering data. Here we show how the recent model-independent dispersive analysis of $ππ\rightarrow K\bar K$ data can be easily implemented in the LHCb formalism. This leads to a more accurate description of the asymmetry, while being consistent with the measured scattering amplitude and confirming the prominent role of hadronic final state interactions, paving the way for more elaborated analyses.
