Parameterization dependence of T matrix poles and eigenphases from a fit to $\pi$N elastic scattering data
Parameterization dependence of T matrix poles and eigenphases from a fit to $\pi$N elastic scattering data
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DOI：
10.1103/physrevc.86.035202
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发表时间：
2012-04
影响因子：
3.1
通讯作者：
R. Workman;R. Arndt;W. Briscoe;Mark Wayne Paris;I. Strakovsky
中科院分区：
文献类型：
--
作者：
R. Workman;R. Arndt;W. Briscoe;Mark Wayne Paris;I. Strakovsky
我们比较适合piN弹性散射数据，基于Chew-Mandelkirk矩阵形式主义。共振，其特征在于T-矩阵极点，比较适合产生和没有明确的Chew-Mandelhattan K-矩阵极点。S矩阵的对角化产生本征相位表示。虽然本征相位可以为不同的参数化显着变化，大多数T矩阵极点的位置是相对稳定的。
We compare fits to piN elastic scattering data, based on a Chew-Mandelstam K-matrix formalism. Resonances, characterized by T-matrix poles, are compared in fits generated with and without explicit Chew-Mandelstam K-matrix poles. Diagonalization of the S matrix yields the eigenphase representation. While the eigenphases can vary significantly for the different parameterizations, the locations of most T-matrix poles are relatively stable.