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arXiv · 1405.0818

The decay $\tau\rightarrow f_1 \pi \nu_\tau$ in the Nambu--Jona-Lasinio model

A. V. Vishneva·M. K. Volkov·D. G. Kostunin
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Abstract

The width of the decay $\tau\rightarrow f_1 \pi \nu_\tau$ has recently been measured by the BaBar experiment. The estimation of this width is given in the framework of the NJL model with the axial-vector mesons. Prediction is in agreement with the experimental data. It is shown that the $\pi-a_1$ transition contribution plays an important role and allows us to bring the NJL prediction to the data.

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A. V. Vishneva, M. K. Volkov, D. G. Kostunin. 2014-05-05. The decay $\tau\rightarrow f_1 \pi \nu_\tau$ in the Nambu--Jona-Lasinio model. https://doi.org/10.1140/epja/i2014-14137-3

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