Weak semileptonic decays of vector mesons in the NJL model

Abstract

The decay widths of $V\to K(\pi )l{\bar{\nu }}_l$ are calculated within the Nambu--Jona-Lasinio model, where $V=K^{\ast },\rho ,\omega ,\varphi$ and $l=\mu ,e$. The results are obtained using the previously fixed model parameters without introducing any arbitrary parameters. The obtained results are considered as predictions due to the absence of experimental data.

arXiv comment7 pages, 2 figures