TY - GEN T1 - Searches for exclusive Higgs and $Z$ boson decays into a vector quarkonium state and a photon using $139$ fb$^{-1}$ of ATLAS $\sqrt{s}=13$ TeV proton$-$proton collision data UR - http://dx.doi.org/10.1140/epjc/s10052-023-11869-1 PY - 2022/08/05 AU - Collaboration ATLAS ED - Y2 - 2025/07/02 ER -