Speaker
Dr
Jacobo Ruiz de Elvira
(Hiskp, Bonn)
Description
Starting from hyperbolic dispersion relations for the invariant amplitudes of pion–nucleon scattering together with crossing symmetry and unitarity, we derive a closed system of integral equations for the partial waves of both the s-channel (\pi N->\pi N) and the t-channel (\pi\pi→\bar N N) reaction, called Roy–Steiner equations. We also solve the t-channel subsystem by means of Muskhelishvili–Omnès techniques and present preliminary results on the solution of the s-channel problem.
Primary author
Dr
Jacobo Ruiz de Elvira
(Hiskp, Bonn)
Co-authors
Prof.
Bastian Kubis
(Hiskp, bonn)
Dr
Martin Hoferichter
(itp, Bern)
Prof.
Ulf-G. Meissner
(Univ. Bonn & FZ Juelich)
