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2010 | 8 | 4 | 580-586
Tytuł artykułu

Radiative decays of scalar mesons σ(600), f 0(980) and a 0(980) in the local Nambu-Jona-Lasinio model

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The two-photon decay widths of scalar mesons σ(600), f 0(980) and a 0(980) as well a 0 → ju(ω)γ and f 0 → ju(ω)γ are calculated in the framework of the local Nambu-Jona-Lasinio model. The contributions of the quark loops (Hartree-Fock approximation) and the meson loops (next 1/N c-approximation where N c is the number of colors) are taken into account. The values of these contributions, as we show, are of the same order of magnitude. For the f 0 decay the K-loop contribution plays the dominant role. The results for two-gamma decays are in satisfactory agreement with modern experimental data. The predictions for a 0 → ju(ω)γ and f 0 → ju(ω)γ widths are given.
Wydawca

Czasopismo
Rocznik
Tom
8
Numer
4
Strony
580-586
Opis fizyczny
Daty
wydano
2010-08-01
online
2010-05-22
Twórcy
  • Joint Institute for Nuclear Research, Joliot-Curie 6, 141980, Dubna, Russia, bystr@theor.jinr.ru
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-009-0131-8
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