魅力CP: $\ δ A_{CP}$和辐射衰减

A. Soni
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引用次数: 2

摘要

由于LHCb合作首次在粲衰变中发现了非常重要的CP违背,本文讨论了附近共振(如标量$f_0(1710)$)在解释观测到的CP中的作用。有人认为,这种共振的影响也可以解释SU(3)在其衰变中出现如此大的断裂的长期困惑。还解释了这种共振的介入将使$\Delta A_{CP}$的第一性原理计算变得相当困难。相反,有人提出,在简单的辐射终态(如$D^0 \to \gamma \phi [\to K^+ K^-]$, $D^0 \to l^+ l^- \pi$等)中寻找CP违和有更好的理论精度研究机会,因此强烈要求对此进行理论和实验研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Charm CP: $\Delta A_{CP}$ and Radiative decays
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 $\Delta A_{CP}$ rather difficult. Instead, it is proposed that searches for CP violation in simple radiative final states, such as $D^0 \to \gamma \phi [\to K^+ K^-]$, $D^0 \to l^+ l^- \pi$ etc. has much better chance of theoretical precision studies and therefore theoretical and experimental investigations therein are strongly urged.
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