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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2018 Volume 108, Issue 6, Pages 369–373 (Mi jetpl5694)

This article is cited in 4 papers

FIELDS, PARTICLES, AND NUCLEI

The $\tau \rightarrow \bar{K}^{*0}(892) \pi^{-}\nu_{\tau}$ decay in the Nambu–Jona–Lasinio model

M. K. Volkov, A. A. Pivovarov

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

Abstract: The width of the $\tau \rightarrow \bar{K}^{*0}(892) \pi^{-}\nu_{\tau}$ decay is calculated within the Nambu–Jona–Lasinio model taking into account four channels of the formation of the $\tau \rightarrow \bar{K}^{*0}(892) \pi^{-}$ pair–the contact interaction and three channels with intermediate axial-vector, vector, and pseudoscalar mesons. Leading contributions arise from the contact interaction and axial-vector channel with an intermediate ground-state $K_1(1270)$ meson. Our theoretical estimate adequately reproduces the measured $\tau \rightarrow \bar{K}^{*0}(892) \pi^{-}\nu_{\tau}$ decay width.

Received: 16.07.2018
Revised: 03.08.2018

DOI: 10.1134/S0370274X18180017


 English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 108:6, 347–351

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