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τ- → π-π~0ν_τ decay in the extended NJL model

机译:扩展NJL模型中的τ-→π-π〜0ν_τ衰减

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摘要

The width of the decay τ- → π-π~0ν_τ was calculated in the extended NJL model. Contact interaction of W boson with a pion pair as well as the contribution of the ρ mesons in the ground and first radialexcited states are taken into account. The sum of the contact diagram and diagram with intermediate ρ meson in the ground state leads to the result which coincides with the result of the vector-dominance model. Our results are in satisfactory agreement with experimental data.
机译:在扩展的NJL模型中计算了衰减的宽度τ-→π-π〜0ν_τ。考虑了玻色子与介子对的接触相互作用以及ρ介子在基态和第一径向激发态中的贡献。接触图与基态中介子介子图的总和得出的结果与矢量主导模型的结果一致。我们的结果与实验数据令人满意。

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