91 citations · 308 across the 7 of their papers we have counts for
7 papers
Roy-Steiner equations for pi N scattering
Christoph Ditsche, Martin Hoferichter, Bastian Kubis +1
Starting from hyperbolic dispersion relations for the invariant amplitudes of pion-nucleon scattering together with crossing symmetry and unitarity, one can derive a closed system…
Improved dispersive analysis of the scalar form factor of the nucleon
Martin Hoferichter, Christoph Ditsche, Bastian Kubis +1
We present a coupled system of integral equations for the pi pi --> Nbar N and Kbar K --> Nbar N S-waves derived from Roy-Steiner equations for pion-nucleon scattering. We discuss…
Dispersive analysis of the scalar form factor of the nucleon
M. Hoferichter, C. Ditsche, B. Kubis +1
Based on the recently proposed Roy-Steiner equations for pion-nucleon scattering, we derive a system of coupled integral equations for the pi pi --> N-bar N and K-bar K --> N-bar N…
Roy-Steiner equations for pion-nucleon scattering
C. Ditsche, M. Hoferichter, B. Kubis +1
Starting from hyperbolic dispersion relations, we derive a closed system of Roy-Steiner equations for pion-nucleon scattering that respects analyticity, unitarity, and crossing sym…
Rescattering effects in eta {\to} 3pi decays
Sebastian P. Schneider, Bastian Kubis, Christoph Ditsche
The isospin-breaking decay eta {\to} 3pi is an ideal tool to extract information on light quark mass ratios from experiment. For a precise determination, however, a detailed descri…
Electromagnetic effects in eta --> 3 pi
Christoph Ditsche, Bastian Kubis, Ulf-G. Meißner
We re-evaluate the electromagnetic corrections to eta --> 3 pi decays at next-to-leading order in the chiral expansion, arguing that effects of order e^2(m_d-m_u) disregarded so fa…