Parameterization dependence of T matrix poles and eigenphases from a fit to piN elastic scattering data

Details Parameterization dependence of T matrix poles and eigenphases from a fit to piN elastic scattering data Parameterization dependence of T matrix poles and eigenphases from a fit to piN elastic scattering data

2012-04-10

arxiv.org/abs/1204.2277v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 3 figures, 1 table

Scientific paper

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.

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