A. Pivovarov

activity

20172022

most citedOn the mixing angle of the vector mesons

ω (782)

and

ϕ (1020)

8 citations · 11 across the 6 of their papers we have counts for

collaborators

14 papers

hep-ph2022

Low-energy interactions of mesons with participation of the first radially excited states in $U (3) \times U (3)$ NJL model

M. K. Volkov, A. A. Pivovarov, K. Nurlan

The $U (3) \times U (3)$ chiral symmetric NJL model describing pseudoscalar, vector, and axial vector mesons in both the ground state and first radially excited states is shortly pre…

hep-ph2021

The decay $τ \to K^{-} η ν_{τ}$ in the extended Nambu-Jona-Lasinio model taking into account the meson interaction in the final state

M. K. Volkov, A. A. Pivovarov

The branching fraction of the decay $τ \to K^{-} η ν_{τ}$ has been calculated by using the extended Nambu-Jona-Lasinio model taking into account the meson interaction in the final stat…

hep-ph2021

$1/ N_{c}$ approximation and universality of vector mesons

M. K. Volkov, A. A. Osipov, A. A. Pivovarov +1

In this work, we argue that the observed differences in the value of the vector coupling constant extracted from the decays $ρ \to π π$ ( $g_{ρ} = 6.0$ ), $ρ \to l^{+} l^{-}$ ( $g_{ρ} = 5.0$ ) an…

hep-ph2020

Fixing the vector coupling constant $g_{ρ} = 5.0$ in the NJL model and final-state interactions in processes $ρ \to e^{+} e^{-} [μ^{+} μ^{-}]$ , $ρ \to π^{+} π^{-}$ , $τ \to π^{-} π^{0} ν_{τ}$ , and $e^{+} e^{-} \to π^{+} π^{-}$

M. K. Volkov, A. B. Arbuzov, K. Nurlan +1

The possibility to use the width of the decay $ρ \to e^{+} e^{-}$ to fix the input parameter $g_{ρ} = 5.0$ of the $S U (2) \times S U (2)$ chiral-symmetric Nambu--Jona-Lasinio model is discu…

hep-ph2020

Processes $τ^{-} \to π^{-} π^{0} ν_{τ}$ and $e^{+} e^{-} \to π^{+} π^{-}$ in the chiral NJL model with final state interactions taken into account

M. K. Volkov, A. B. Arbuzov, A. A. Pivovarov

The processes $τ^{-} \to π^{-} π^{0} ν_{τ}$ and $e^{+} e^{-} \to π^{+} π^{-}$ are considered within the chiral Nambu--Jona-Lasinio model with taking into account the pion final state intera…

hep-ph2020★ 8 cited

On the mixing angle of the vector mesons $ω (782)$ and $ϕ (1020)$

M. K. Volkov, A. A. Pivovarov, K. Nurlan

In the present work, the mixing angle of the vector $ω (782)$ and $ϕ (1020)$ mesons is estimated in the framework of Nambu--Jona-Lasinio model. The decay $ϕ \to π^{0} γ$ is considered…

Low-energy interactions of mesons with participation of the first radially excited states in U(3)×U(3) NJL model

The decay τ→K−ηντ​ in the extended Nambu-Jona-Lasinio model taking into account the meson interaction in the final state

1/Nc​ approximation and universality of vector mesons

Fixing the vector coupling constant gρ​=5.0 in the NJL model and final-state interactions in processes ρ→e+e−[μ+μ−], ρ→π+π−, τ→π−π0ντ​, and e+e−→π+π−

Processes τ−→π−π0ντ​ and e+e−→π+π− in the chiral NJL model with final state interactions taken into account