August 28, 2016 to September 4, 2016
Europe/Athens timezone

Roy-Steiner-equation analysis of pion-nucleon scattering

Aug 29, 2016, 5:30 PM
30m
Amfitrion II (Makedonia Palace)

Amfitrion II

Makedonia Palace

Section B: Light Quarks Section B

Speaker

Jacobo Ruiz de Elvira (HISKP, Bonn University)

Description

A precise understanding of low-energy pion-nucleon interactions is central for many areas in nuclear and hadronic physics, ranging from the scalar couplings of the nucleon to the long-range part of two-pion-exchange potentials and three-nucleon forces in Chiral Effective Field Theory. We present a calculation that combines the general principles of analyticity, unitarity, and crossing symmetry with modern high-precision data of hadronic atoms, leading to a phenomenological description of the pion-nucleon amplitude with unprecedented rigor and accuracy. Consequences for the pion-nucleon sigma-term and the matching to Chiral Perturbation Theory will be discussed.

Primary author

Jacobo Ruiz de Elvira (HISKP, Bonn University)

Co-authors

Prof. Bastian Kubis (HISKP, Bonn) Dr Martin Hoferichter (INT, Seattle) Prof. Ulf Meißner (meissner@hiskp.uni-bonn.de)

Presentation materials