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

• Authors: Mikhail Volkov , Eduard Kuraev , Yury Bystritskiy
• Languages of publication: EN

Abstracts

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.

Keywords

EN

radiative meson decays; local Nambu-Jona-Lasinio model

Discipline

• 13.20.Jf: Decays of other mesons
• 12.39.Fe: Chiral Lagrangians
• 11.30.Rd: Chiral symmetries

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2010
• Volume: 8
• Issue: 4
• Pages: 580-586

Dates

published

1 - 8 - 2010

online

22 - 5 - 2010

Contributors

author

Mikhail Volkov

• Joint Institute for Nuclear Research, Joliot-Curie 6, 141980, Dubna, Russia

author

Eduard Kuraev

• Joint Institute for Nuclear Research, Joliot-Curie 6, 141980, Dubna, Russia

author

Yury Bystritskiy

• Joint Institute for Nuclear Research, Joliot-Curie 6, 141980, Dubna, Russia

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Identifiers

DOI

10.2478/s11534-009-0131-8