Sensitivity of the ${\eta }^{(\prime )}\to {\pi }^0\gamma \gamma$ and ${\eta }^{\prime }\to \eta \gamma \gamma$ decays to a sub-GeV leptophobic $U(1{)}_B$ boson

Rafel Escribano, Sergi Gonzàlez-Solís, Emilio Royo

The sensitivity of the rare decays ${\eta }^{(\prime )}\to {\pi }^0\gamma \gamma$ and ${\eta }^{\prime }\to \eta \gamma \gamma$ to signatures of a leptophobic $B$ boson in the MeV-GeV mass range is analyzed in this work. By a…