Hoferichter, Martin; Ditsche, Christoph; Kubis, Bastian; Meissner, Ulf-G. (2013). Improved dispersive analysis of the scalar form factor of the nucleon. PoS - proceedings of science, CD12, 069. Scuola Internazionale Superiore di Studi Avanzati SISSA
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We present a coupled system of integral equations for the pp → ¯NN and ¯K K → ¯N N S-waves derived from Roy–Steiner equations for pion–nucleon scattering. We discuss the solution of the corresponding two-channel Muskhelishvili–Omnès problem and apply the results to a dispersive analysis of the scalar form factor of the nucleon fully including ¯KK intermediate states. In particular, we determine the corrections Ds and DD, which are needed for the extraction of the pion–
nucleon s term from pN scattering, and show that the difference DD −Ds = (−1.8±0.2)MeV is insensitive to the input pN parameters.
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: |
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: |
18 Jun 2014 15:11 |
Last Modified: |
05 Dec 2022 14:28 |
BORIS DOI: |
10.7892/boris.42582 |
URI: |
https://boris.unibe.ch/id/eprint/42582 |
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