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

Autor:	Stefan Krieg, Giannis Koutsou, John W. Negele, Gumaro Rendon, Giorgio Silvi, Constantia Alexandrou, Sergey Syritsyn, Srijit Paul, Stefan Meinel, Marcus Petschlies, Luka Leskovec, Andrew Pochinsky
Rok vydání:	2020
Předmět:	Coupling Physics Scattering QC1-999 Computer Science::Information Retrieval High Energy Physics::Lattice Nuclear Theory Lattice QCD Fermion Resonance (particle physics) Nuclear physics Pion Isospin ddc:530 Nuclear Experiment Nucleon
Zdroj:	The European physical journal / Web of Conferences 241, 02006 (2020). doi:10.1051/epjconf/202024102006 The 12th International Workshop on the Physics of Excited Nucleons, Bonn, Germany, 2019-06-10-2019-06-14 EPJ Web of Conferences, Vol 241, p 02006 (2020)
ISSN:	2100-014X
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d35215371f84ce2e879baba3b9494657 https://doi.org/10.1051/epjconf/202024102006 Zobrazit plný text záznamu Plný text ve formátu PDF