Improvement of Multichannel Amplitudes for the Pion-Pion Scattering Using the Dispersion Relations

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F13%3A00395970" target="_blank" >RIV/61389005:_____/13:00395970 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/s00601-012-0530-z" target="_blank" >http://dx.doi.org/10.1007/s00601-012-0530-z</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00601-012-0530-z" target="_blank" >10.1007/s00601-012-0530-z</a>

Result language
angličtina
Original language name
Improvement of Multichannel Amplitudes for the Pion-Pion Scattering Using the Dispersion Relations
Original language description
The multichannel S- and P-wave amplitudes for the pi pi 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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Project
<a href="/en/project/GAP203%2F12%2F2126" target="_blank" >GAP203/12/2126: Microscopic models for the description of hadronic systems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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