论文标题
稀有魅力衰减的理论和实验状态
Theoretical and experimental status of rare charm decays
论文作者
论文摘要
罕见的魅力衰减提供了独特的可能性，可以在标准模型及更高版本中探索向上部门中改变风味的中性电流。由于缺乏可靠地描述其低能量动态的有效方法，因此长期以来被认为罕见的魅力衰减被认为不太有希望。但是，这种缺乏并不排除对新物理本身进行有前途的搜索的可能性，但是需要不同的工作理念。标准模型的精确或近似对称性允许构建清洁的无效可观察物，从而为发现新物理学的发现提供了一条良好的道路，并补充了下层扇区中现有的研究。在这篇综述中，我们总结了稀有魅力$ |ΔC| = |ΔU| = 1 $转变的理论和实验状态，以及当前和未来实验的机会，例如LHCB，Belle II，BES III，FCC-EE，FCC-EE和提议的Tau-Charm工厂。我们还使用最新的实验结果来报告有关违反威尔逊系数的Lepton-Favour Conceering和Lepton-Flavour的最新限制。
Rare charm decays offer the unique possibility to explore flavour-changing neutral-currents in the up-sector within the Standard Model and beyond. Due to the lack of effective methods to reliably describe its low energy dynamics, rare charm decays have been considered as less promising for long. However, this lack does not exclude the possibility to perform promising searches for New Physics per se, but a different philosophy of work is required. Exact or approximate symmetries of the Standard Model allow to construct clean null-test observables, yielding an excellent road to the discovery of New Physics, complementing the existing studies in the down-sector. In this review, we summarize the theoretical and experimental status of rare charm $|Δc|=|Δu|=1$ transitions, as well as opportunities for current and future experiments such as LHCb, Belle II, BES III, the FCC-ee and proposed tau-charm factories. We also use the most recent experimental results to report updated limits on lepton-flavour conserving and lepton-flavour violating Wilson coefficients.
