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Radiative decays of scalar mesons σ(600)...
Volkov, M. K....

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Radiative decays of scalar mesons σ(600), f_0(980) and a_0(980) in the local Nambu-Jona-Lasinio model by Volkov, M. K. ( Author )
Lemonjar Open Access
N.A
16-04-2009
The two-photon decay widths of scalar mesons \sigma(600), f_0(980) and a_0(980) as well a_0 -> \rho(\omega)\gamma and f_0 -> \rho(\omega)\gamma 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/Nc -approximation where Nc is the number of colors) are taken into account. These contributions, as we show, are the values of the same order of magnitude. For the f_0 decay the K-loop contribution turns out to play the dominant role. The results for two-gamma decays are in satisfactory agreement with modern experimental data. The predictions for a_0 -> \rho(\omega)\gamma and f_0 -> \rho(\omega)\gamma widths are given.
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Article
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English
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MYR 0.00
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https://arxiv.org/abs/0904.2484
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