A search for the decays of the Higgs and $Z$ bosons to a $\varphi$ meson and a photon is performed with a $pp$ collision data sample corresponding to an integrated luminosity of $2.7{\mathrm{fb}}^{-1}$ collected at $\sqrt{s}=13\mathrm{TeV}$ with the ATLAS detector at the LHC. No significant excess of events is observed above the background, and 95% confidence level upper limits on the branching fractions of the Higgs and $Z$ boson decays to $\varphi \gamma$ of $1.4\times 10^{-3}$ and $8.3\times 10^{-6}$, respectively, are obtained.

• Received 14 July 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.111802

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© 2016 CERN, for the ATLAS Collaboration