论文标题
$ k \至πππ$振幅的结构的确定来自最新数据
Determination of the structure of the $K \to πππ$ amplitudes from recent data
论文作者
论文摘要
这封信提供了十个真实系数的新确定，这些系数描述了$ k \至ππ$振幅在限制中的结构，而iSospin是保守的，并且由于CP违规或最终状态撤销而被忽略了。通过对过去二十年来收集的Dalitz-plot结构和部分差价率的数据，通过对达利兹 - 图组结构的数据和部分高表演实验来获得这种确定。详细讨论了拟合过程中的拟合程序和实验数据的处理方式。我们的拟合度导致了描述$ k \ toπππ$振幅的线性和二次斜率的系数的更精确确定。
This Letter provides a new determination of the ten real coefficients that describe the structure of the $K \to πππ$ amplitudes in the limit where isospin is conserved and complex phases, due to either CP violation or final-state rescattering, are neglected. This determination is obtained through a fit to the data on the Dalitz-plot structures and partial-decay rates collected during the last twenty years by several high-precision experiments. The fitting procedure and the way the experimental data have been handled in the fit are discussed in detail. Our fit leads to a more precise determination of the coefficients describing the linear and quadratic slopes of the $K \to πππ$ amplitudes.
