论文标题
非物理中介子衰变对三流风的NAMBU-JONA-LASINIO模型中的参数固定的影响在不同的正则化方法中
Impact of unphysical meson decays on the parameter fixing in the three-flavour Nambu-Jona-Lasinio model for different regularisation methods
论文作者
论文摘要
我们研究了允许的非物理介子衰减的影响，使其成为三种风味nambu-Jona-Lasinio（NJL）模型对其参数固定的三种夸克式群。这种衰减分别在相应的介子传播器及其极化循环的非逐渐虚构部分中表现出来。为了处理新兴的分歧积分，我们专注于Pauli-Villars，三和四动量截止正则化方法。在这里，我们将参数固定在某些可观察到的物体上，这些观测值是由非逐渐虚构部分影响的。在有或不考虑偏振循环的假想部分的情况下，将每个正则化方案的结果参数集进行比较。
We investigate the influence of the allowed unphysical meson decay into a quark-antiquark pair of the three flavour Nambu--Jona-Lasinio (NJL) model on its parameter fixing. This decay manifests in a non-vanishing imaginary part of the corresponding meson propagator and its polarisation loop, respectively. In order to handle the emerging divergent integrals, we focus on the Pauli-Villars, three- and four momentum cutoff regularisation method. Here, we fix the parameters to certain observables, which are effected by the non-vanishing imaginary part. The resulting parameter-sets for each regularisation scheme are compared to each other with and without taking the imaginary part of the polarisation loop into account.
