Explaining the MiniBooNE anomalous excess via a leptophilic ALP-sterile neutrino coupling

Recently, the MiniBooNE experiment at Fermilab has updated results with increased data and reported an excess of $560.6 \pm 119.6$ electronlike events ($4.7\sigma$) in neutrino operation mode. In this paper, we propose a scenario to account for where Dirac-type sterile neutrino, produced by charged kaon decay through mixing, decays into leptophilic axionlike particle ($\ell$ALP) muon neutrino. The electron-positron pairs from $\ell$ALP can be interpreted as provided that their opening angle is sufficiently small. our framework, consider mass $m^{}_a = 20\,\text{MeV}$ inverse constant $c^{}_e/f^{}_a 10^{-2}\,\text{GeV}^{-1}$, allowed astrophysical experimental constraints. Then, after integrating predicted angular or visible energy spectra obtain total event number, find masses within $150\,\text{MeV}\lesssim m^{}_N \lesssim 380 \,\text{MeV}$ ($150\,\text{MeV}\lesssim 180 \,\text{MeV}$) mixing parameters between $10^{-10} |U_{\mu 4}|^2 10^{-8}$ ($3\times 10^{-7} 8 \times10^{-7}$) explain data.