Analysis of the pion-pion scattering data and rho-like mesons
Result description
Considering analyticity, unitarity and an influence of coupled channels, experimental data on the isovector P-wave of pi pi scattering was analyzed to study rho-like mesons below 1900 MeV. The analysis indicates that in the energy range 1200-1900 MeV, there are possibly four p-like mesons: rho(1250), rho(1450), rho(1600), and rho(1900). The obtained P-wave pi pi-scattering length (a(1)(1) = 33.9 +/- 2.02 vertical bar 10(-3)m(pi+)(-3) vertical bar) matches most to that calculated in the local Nambu-Jona-Lasinio model.
Keywords
pion-pion scatteringvector-meson resonancesuniformizing variable
The result's identifiers
Result code in IS VaVaI
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Analysis of the pion-pion scattering data and rho-like mesons
Original language description
Considering analyticity, unitarity and an influence of coupled channels, experimental data on the isovector P-wave of pi pi scattering was analyzed to study rho-like mesons below 1900 MeV. The analysis indicates that in the energy range 1200-1900 MeV, there are possibly four p-like mesons: rho(1250), rho(1450), rho(1600), and rho(1900). The obtained P-wave pi pi-scattering length (a(1)(1) = 33.9 +/- 2.02 vertical bar 10(-3)m(pi+)(-3) vertical bar) matches most to that calculated in the local Nambu-Jona-Lasinio model.
Czech name
Analýza dat pro rozptyl pion-pion a ró-podobné mezony
Czech description
Suvážením analytičnosti,unitarity a vlivem vázaných kanálů byla analyzována data pro vzorektorovou P-vlnu v rozptzlu pionů a studovány ró-podobné mezony do 1900 MeV. Analýza naznaqčuje, že v rozmezí energií 1200-1900 MeV JSOU 4 ró-podobné mezony:rho(1250), rho(1450),rho(1600) a rho(1900). Získaná rozptylová délka pro P-vlnu se nejvíce blíží hodnotě vypočtené v rámci modelu Nambu-Jona-Lasinio.
Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Result continuities
Project
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nuclear Physics. A
ISSN
0375-9474
e-ISSN
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Volume of the periodical
807
Issue of the periodical within the volume
3-4
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
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UT code for WoS article
00025763200003
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BE - Theoretical physics
Year of implementation
2008