Low-energy pion-nucleon scattering and the Δ resonance in lattice QCD

Author:

Alexandrou Constantia,Koutsou Giannis,Krieg Stefan,Leskovec Luka,Meinel Stefan,Negele John W.,Paul Srijit,Petschlies Marcus,Pochinsky Andrew,Rendon Gumaro,Silvi Giorgio,Syritsyn Sergey

Abstract

We report on our investigation of low-energy pion-nucleon scattering from lattice QCD with Wilson type fermions. Our focus is on the isospin I = 3/2 channel, which couples to the Delta resonance. We discuss our calculations aiming at the extraction of the Delta resonance mass, width and effective coupling at pion mass 250 MeV, using the Lüscher finite-volume method to extract the phase shift δJ=3/2,l=1.

Publisher

EDP Sciences

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