Nucleon-nucleon resonances at intermediate energies using a complex energy formalism

Abstract

We apply our method of complex scaling, valid for a general class of potentials, in a search for nucleon-nucleon S-matrix poles up to 2 GeV laboratory kinetic energy. We find that the realistic potentials JISP16, constructed from inverse scattering, and chiral field theory potentials N${}^3$LO and N${}^2$LO${}_{opt}$ support resonances in energy regions well above their fit regions. In some cases these resonances have widths that are narrow when compared with the real part of the S-matrix pole.

arXiv comment7 pages, 5 figures, 2 Tables

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