/ Phenomenology-HEP

Decays $\tau \to (\eta, \eta')K–ν_\tau$ in the extended Nambu–Jona-Lasinio model

Volkov, M.K. (Dubna, JINR) ; Pivovarov, A.A. (Dubna, JINR)

Published in: JETP Lett.
Year: 2016
Vol.: 103    Num./Issue: 10
Page No: 613-617
Pages: 5
Year: 2016-07-31 published

Abstract: The decays τ → (η, η')K–ν$_{τ}$ are described in the framework of the extended Nambu–Jona-Lasinio model. Both full and differential widths of these decays are calculated. The vector and scalar channels are considered. In the vector channel, the subprocesses with the intermediate K*(892) and K*(1410) mesons play the main role. In the scalar channel, the subprocesses with the intermediate and K$_{0}^{*}$ (800) and K$_{0}^{*}$ (1430) mesons are taken into account. The scalar channel gives an insignificant contribution to the full width of the decay τ → ηK–ν$_{τ}$. The obtained results are in satisfactory agreement with the experimental data. The prediction for the width of the process τ → η′K–ν$_{τ}$ is made.

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DOI: 10.1134/S0021364016100106