Modified pi pi amplitude with sigma pole
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F14%3A00439718" target="_blank" >RIV/61389005:_____/14:00439718 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevD.90.116005" target="_blank" >http://dx.doi.org/10.1103/PhysRevD.90.116005</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevD.90.116005" target="_blank" >10.1103/PhysRevD.90.116005</a>
Alternative languages
Result language
angličtina
Original language name
Modified pi pi amplitude with sigma pole
Original language description
A set of well-known once subtracted dispersion relations with imposed crossing symmetry condition is used to modify unitary multichannel S (pi pi, K (K) over bar, and eta eta) and P (pi pi, rho 2 pi, and rho sigma) wave amplitudes mostly below 1 GeV. Before the modifications, these amplitudes significantly did not satisfy the crossing symmetry condition and did not describe the pi pi threshold region. Moreover, the pole of the S wave amplitude related with the f(0)(500) meson (former f(0)(600) or sigma)had much smaller imaginary part and bigger real one in comparison with those in the newest Particle Data Group Tables. Here, these amplitudes are supplemented by near threshold expansion polynomials and refitted to the experimental data in the effectivetwo pion mass from the threshold to 1.8 GeV and to the dispersion relations up to 1.1 GeV. In result the self consistent, i.e., unitary and fulfilling the crossing symmetry condition, S and P wave amplitudes are formed and the sigma pole
Czech name
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Czech description
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Classification
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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Result continuities
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
Others
Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review D: Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
e-ISSN
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Volume of the periodical
90
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
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UT code for WoS article
000346670700005
EID of the result in the Scopus database
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