The second-class current decays τ → πη(η′)ντ in the NJL model including the interaction of mesons in the final state

2021

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DOI 10.1142/s0217751x21502092
Data confidence 70 medium
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Abstract

The effect of the interaction of mesons in the final state is additionally considered within the description of [Formula: see text] decays. This interaction is taken into account at the level of production of intermediate pions. One of them, in turn, might be transited into [Formula: see text] or [Formula: see text] mesons. Our results do not exceed the experimentally established branching fractions, and they are in agreement with the results of other theoretical studies.