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Pis'ma v Zh. Èksper. Teoret. Fiz., 2019, Volume 109, Issue 4, Pages 219–222 (Mi jetpl5822)  

FIELDS, PARTICLES, AND NUCLEI

On the dependence of the widths of the $\tau \rightarrow [\rho^{0}(770), \rho^{0}(1450)] \pi^{-} \nu_{\tau}$ decays on the parameters of the intermediate $a_1$ meson

M. K. Volkov, A. A. Pivovarov

Joint Institute for Nuclear Research, Bogoliubov Laboratory of Theoretical Physics, Dubna, Moscow Region

Abstract: The widths of the $\tau \rightarrow [\rho^{0}(770), \rho^{0}(1450)] \pi^{-} \nu_{\tau}$ decays have been calculated within the extended Nambu–Jona-Lasinio model including both the ground and first radially excited intermediate meson states. The axial-vector channel with intermediate $a_1$ mesons dominates. The values of the masses and total widths of the $a_1$ meson recently obtained by the COMPASS and JPAC Collaborations have been taken into account.

Funding Agency Grant Number
Joint Institute for Nuclear Research 19-302-06


DOI: https://doi.org/10.1134/S0370274X19040027

Full text: PDF file (155 kB)
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English version:
Journal of Experimental and Theoretical Physics Letters, 2019, 109:4, 222–225

Bibliographic databases:

Document Type: Article
Received: 05.12.2018
Revised: 05.12.2018
Accepted:14.12.2018

Citation: M. K. Volkov, A. A. Pivovarov, “On the dependence of the widths of the $\tau \rightarrow [\rho^{0}(770), \rho^{0}(1450)] \pi^{-} \nu_{\tau}$ decays on the parameters of the intermediate $a_1$ meson”, Pis'ma v Zh. Èksper. Teoret. Fiz., 109:4 (2019), 219–222; JETP Letters, 109:4 (2019), 222–225

Citation in format AMSBIB
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\paper On the dependence of the widths of the $\tau \rightarrow [\rho^{0}(770), \rho^{0}(1450)] \pi^{-} \nu_{\tau}$ decays on the parameters of the intermediate $a_1$ meson
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2019
\vol 109
\issue 4
\pages 219--222
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