论文标题
$ a_1（1260）$的dalitz情节和线形来自相对论三体统一方法
Dalitz plots and lineshape of $a_1(1260)$ from a relativistic three-body unitary approach
论文作者
论文摘要
我们在明显的三体统一参数化中制定了$ a_1（1260）$共振衰减的最终状态交互，并将其适合通过Aleph实验测量的$ A_1（1260）$ lineshape。提出了根据此拟合计算的Dalitz图。这项工作证明了数值求解先前得出的幅度及其对具有自旋和耦合通道的等速箱的可行性。该模型也可以应用于其他中膜衰减，并因其明显的单位性而在晶状体QCD中产生的有限体积问题进行了修改。
We formulate the final state interaction of the $a_1(1260)$ resonance decay in a manifestly three-body unitary parameterization and fit it to the $a_1(1260)$ lineshape measured by the ALEPH experiment. Dalitz plots calculated from this fit are presented. The work demonstrates the feasibility to numerically solve a previously derived amplitude and its generalization to isobars with spin and coupled channels. The model can also be applied to other meson decays and modified for the finite-volume problem as it arises in lattice QCD due to its manifest unitarity.
