Calculation of the width of the decay $τ\to K^{-} K^{0} ν_τ$ in the extended NJL model with estimation of the contribution of the kaon final state interaction
M. K. Volkov,
A. A. Pivovarov
Abstract:The branching fraction of the decay τ → K − K 0 ντ is calculated in the framework of the extended Nambu-Jona-Lasinio model. The contact and vector channels are considered. The contributions to this process of the ρ meson in the ground and first radially excited states are taken into account in the vector channel. The obtained results are in satisfactory agreement with the experimental data. Taking into account the kaon interaction in the final state results in insignificant corrections, which are not beyond th… Show more
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