论文标题
魅力CP：$ΔA_{CP} $和辐射衰减
Charm CP: $ΔA_{CP}$ and Radiative decays
论文作者
论文摘要
由LHCB合作，首次在Charm-Pay中发现CP违规的非常重要的动机，讨论了附近的共鸣（例如标量$ F_0（1710）$）在会计观察到的CP中的作用。有人建议，这种共振的影响也可以解释出如此巨大的su（3）衰减中如此巨大的拼图。还可以解释说，这种共振的干预将使$ΔA_{CP} $的第一原理计算相当困难。取而代之的是，建议在简单的辐射最终状态下搜索违反CP的违规行为，例如$ d^0 \至γD至k^+ k^ - ] $，$ d^0 \ to l^+ l^ - π$等。理论上的精确研究和理论上和实验研究的机会更大了，因此在其中强烈提出了这些研究。
Motivated by the very important discovery of CP violation in charm-decays for the first time, by the LHCb collaboration, the role of nearby resonances such as the scalar $f_0(1710)$ in accounting for the observed CP is discussed. It is suggested that the influence of such a resonance may also explain the long-standing puzzle of such a large breaking of SU(3) seen in its decays. It is also explained that intervention of such resonance(s) will render first principles calculations of $ΔA_{CP}$ rather difficult. Instead, it is proposed that searches for CP violation in simple radiative final states, such as $D^0 \to γϕ[\to K^+ K^-]$, $D^0 \to l^+ l^- π$ etc. has much better chance of theoretical precision studies and therefore theoretical and experimental investigations therein are strongly urged.
