Contribution of Intermediate Axial Vector States to the [ρ(770), ω(782)] → γ[π, η] Electromagnetic Decays in the Nambu—Jona-Lasinio Model
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The well-known [ρ(770), ω(782)] → γ[π, η] electromagnetic decays have been considered within the Nambu-Jona-Lasinio model taking into account contributions from intermediate transitions between axial-vector and pseudoscalar vertices using the [f1(1285), a1(1260)] → γ[ρ(770), ω(782)] vertices recently obtained within this model. The results are in satisfactory agreement with experimental data.
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We are grateful to A.B. Arbuzov for stimulating discussions.
This work was supported by the Joint Institute for Nuclear Research (project no. 19-302-06 for young scientists and specialists).