Semileptonic Decays of Vector Mesons [ρ,ω,φ]→π[e⁺e⁻,μ⁺μ⁻] in a Chiral NJL Model

Volkov M.K. Nurlan K.
March 2021 Pleiades journals

Physics of Particles and Nuclei Letters
2021 #18 Issue 2 148 - 152 pp.

Abstract: Semileptonic decays of vector mesons ρ, ω, φ into a pion and lepton pair e⁺e⁻,μ⁺μ⁻ are described in the chiral Nambu–Jona–Lasinio (NJL) model. Mixing of ω with ϕ is taken into account in a description of vector ϕ meson decay. Direct production via a photon field and production with the participation of intermediate vector mesons ρ or ω are taken into account in the production of l⁺l⁻ lepton pairs. The total and differential widths are compared with an experiment. Predictions for ρ → π [e⁺e⁻,μ⁺μ⁻] and φ → πμ⁺μ⁻ decays are also given.

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Joint Institute for Nuclear Research, Dubna, 141980, Russian Federation
Institute of Nuclear Physics, Almaty, 050032, Kazakhstan
Gumilyov Eurasian National University, Nur-Sultan, 010008, Kazakhstan

Joint Institute for Nuclear Research
Institute of Nuclear Physics
Gumilyov Eurasian National University

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Semileptonic Decays of Vector Mesons [ρ,ω,φ]→π[e+e−,μ+μ−] in a Chiral NJL Model