ALP Production in Weak Mesonic Decays

Axion-Like-Particles are among the most economical and well motivated extensions of Standard Model. In this work ALP production from hadronic leptonic meson decays studied. The hadronization part these decay amplitudes have been obtained using Brodsky-Lepage method or LQCD, at needs. particular, general expressions for emission in mesonic s- t-channel tree-level processes thoroughly discussed, pseudoscalar vector mesons. Accordingly, calculation $M_I\to M_F \,a$ $M\to \ell \nu a$ presented. Finally, bounds on (low-energy effective Lagrangian) ALP-fermion couplings derived, present future flavor experiments.