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This article is cited in 1 scientific paper (total in 1 paper)
FIELDS, PARTICLES, AND NUCLEI
$\tau \to K^{-} \eta \nu_{\tau}$ decay in the extended Nambu–Jona-Lasinio model including the final-state interaction
M. K. Volkov, A. A. Pivovarov Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980 Russia
Abstract:
The width of the $\tau \to K^{-} \eta \nu_{\tau}$ decay has been calculated within the extended Nambu–Jona-Lasinio model including the final-state interaction of mesons. Both the contact term and the channel with the intermediate ground state $K{\text{*}}(892)$ and its first radial excitation $K{\text{*}}(1410)$ have been taken into account. To describe the final-state interaction, a triangle diagram with three mesons has been considered. The cutoff parameter in the diverging integrals over the meson loop has been taken the same as in our preceding work to describe the $\tau \to {{K}^{ - }}{{\pi }^{0}}{{\nu }_{\tau }}$ decay, so no additional parameters are introduced. Satisfactory agreement with experimental data has been obtained.
Received: 23.06.2021 Revised: 20.07.2021 Accepted: 21.07.2021
Citation:
M. K. Volkov, A. A. Pivovarov, “$\tau \to K^{-} \eta \nu_{\tau}$ decay in the extended Nambu–Jona-Lasinio model including the final-state interaction”, Pis'ma v Zh. Èksper. Teoret. Fiz., 114:4 (2021), 199–203; JETP Letters, 114:4 (2021), 167–172
Linking options:
https://www.mathnet.ru/eng/jetpl6485 https://www.mathnet.ru/eng/jetpl/v114/i4/p199
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