AI 中文总结
本研究利用现有分支比信息与确定的强散射参数，探究双道再散射对粲介子CP破坏的意义，发现该方法仍难解释相关实验信号，还得到了约束CP不对称性的求和规则预测。
AI 中文摘要
在标准模型框架内，粲介子强子衰变中观测到的大CP破坏实验现象仍缺乏理论解释。考虑末态π介子与K介子对之间再散射的数据驱动方法给出的预测值与实验值存在差距，且该方法依赖的一组输入参数存在较大不确定性。本研究充分利用了现有关于衰变分支比的信息，以及仅一个确定度良好的强散射输入参数；研究发现，在该方法框架内仍难以解释实验信号，同时得到了约束π介子和K介子道CP不对称性的求和规则预测。
英文摘要
The experimental observation of large CP violation in charm-meson hadronic decays remains theoretically unexplained within the Standard Model. The data-driven approach which accounts for the rescattering between the final-state pion and kaon pairs provides predictions that fall short of the experimental values. However, it relies on a set of inputs that exhibit large uncertainties. In this work, we make optimal use of the available information on branching ratios and of only one strong-scattering input parameter that is well determined. We find that it remains unlikely to explain the experimental signal within this approach and obtain predictions for sum rules that constrain CP asymmetries of the pion and kaon channels.
Comments16 pages, 2 figures
