The second-class current decays τ → π η (η) ν τ in the NJL model including the interaction of mesons in the final state
Volkov M.K. Nurlan K. Pivovarov A.A.
30 September 2021World Scientific
International Journal of Modern Physics A
2021#36Issue 27
The effect of the interaction of mesons in the final state is additionally considered within the description of τ → π η (η)ν τ decays. This interaction is taken into account at the level of production of intermediate pions. One of them, in turn, might be transited into η or η mesons. Our results do not exceed the experimentally established branching fractions, and they are in agreement with the results of other theoretical studies.
Nambu-Jona-Lasinio model , Phenomenological physics , τ -decays
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Bogoliubov Laboratory of Theoretical Physics, JINR, Moscow region, Dubna, 141980, Russian Federation
The Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, 050032, Kazakhstan
Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan
Bogoliubov Laboratory of Theoretical Physics
The Institute of Nuclear Physics
Al-Farabi Kazakh National University
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