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- Title
Improvement of Multichannel Amplitudes for the Pion-Pion Scattering Using the Dispersion Relations.
- Authors
Bydžovský, Petr; Kamiński, Robert
- Abstract
The multichannel S- and P-wave amplitudes for the ππ scattering, constructed requiring analyticity and unitarity of the S-matrix and using the uniformization procedure, are elaborated using the dispersion relations with imposed crossing symmetry condition. The amplitudes are modified in the low-energy region to improve their consistency with experimental data and the dispersion relations. Agreement with data is achieved for both amplitudes from the threshold up to 1.8 GeV and with dispersion relations up to 1.1 GeV. Consequences of the applied modifications, e.g. changes of the S-wave lowest-pole positions, are presented.
- Subjects
PION-pion interactions; DISPERSION relations; P-waves (Electrocardiography); SHEAR waves; SCATTERING (Physics); SYMMETRY (Physics); PHYSICS experiments
- Publication
Few-Body Systems, 2013, Vol 54, Issue 7-10, p1149
- ISSN
0177-7963
- Publication type
Article
- DOI
10.1007/s00601-012-0530-z