Ruiz de Elvira, Jacobo; Hoferichter, Martin; Kubis, Bastian; Meissner, Ulf-G. (20 March 2018). Dispersive analysis of pion-nucleon scattering and the pion-nucleon sigma term. PoS - proceedings of science. Trieste, Italy: Scuola Internazionale Superiore di Studi Avanzati SISSA 10.22323/1.310.0141
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Pion–nucleon scattering is one of the most fundamental processes in nuclear and hadronic physics, with applications that range 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. In this talk, we show how the fruitful combination of dispersion-theoretical methods with modern high- precision data of hadronic atoms allows for a determination of pion–nucleon scattering amplitudes at low energies with an unprecedented accuracy. Special attention will be paid to the extraction of the pion–nucleon σ-term, discussing in detail the current tension with recent lattice results, the determination of the pion–pion continuum in the electromagnetic nucleon form factors, and the determination of the low-energy constants of chiral perturbation theory.
Item Type: |
Conference or Workshop Item (Paper) |
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Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Ruiz de Elvira Carrascal, Jacobo, Hoferichter, Martin |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1824-8039 |
Publisher: |
Scuola Internazionale Superiore di Studi Avanzati SISSA |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
30 Aug 2018 16:08 |
Last Modified: |
05 Dec 2022 15:17 |
Publisher DOI: |
10.22323/1.310.0141 |
BORIS DOI: |
10.7892/boris.119664 |
URI: |
https://boris.unibe.ch/id/eprint/119664 |
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