Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 13: Structure and Dynamics of Nuclei II

HK 13.3: Vortrag

Dienstag, 28. März 2017, 11:45–12:00, F 2

Two-pion exchange corrections to the nucleon-nucleon scattering amplitude in the modified Weinberg approach — •Jens Behrendt — Ruhr-Universität Bochum

We consider the two-pion exchange corrections to the potential and calculate the scattering amplitude in the modified, renormalizable Weinberg approach to the nucleon-nucleon scattering problem in chiral effective field theory. This approach uses time-ordered perturbation theory applied to the manifestly Lorentz invariant form of the effective Lagrangian and does not rely on the heavy baryon expansion. In this framework the leading order amplitude is obtained by solving the Kadyshevsky equation and the corrections are calculated perturbatively.