论文标题
$ a_ {cp}的证据（d^0 \ toπ^+π^ - ）$暗示可观察到的$ cp $违反$ d^0 \toπ^0π^0 $ decay
Evidence of $A_{CP}(D^0\to π^+π^-)$ implies observable $CP$ violation in the $D^0\to π^0π^0$ decay
论文作者
论文摘要
受到LHCB单个模式中$ CP $不对称的近期测量的启发，我们研究了Isospin和拓扑分析中$ d \至ππ$系统的$ CP $不对称性。 The ratio between penguin and tree amplitudes $P/(T+C)$ in the $D\to ππ$ system is found to be greater than two in most values of the relative strong phase. $ d^0 \至π^0π^0 $是一种潜在模式，可以显示$ 10^{ - 3} $的$ CP $不对称，这将来是Belle II在将来观察到的。 $ d \至ππ$系统中的大$ CP $不对称系统可以在$ t $ channel的最终状态交互中理解。
Inspired by the recent measurement of $CP$ asymmetry in the individual mode on LHCb, we study $CP$ asymmetry of the $D\to ππ$ system in the isospin and topological analysis. The ratio between penguin and tree amplitudes $P/(T+C)$ in the $D\to ππ$ system is found to be greater than two in most values of the relative strong phase. And $D^0\to π^0π^0$ is a potential mode to reveal the $CP$ asymmetry of the order of $10^{-3}$, which would be observed by Belle II in the future. The large $CP$ asymmetry in the $D\to ππ$ system might be understood in the $t$-channel final-state interaction.
