Abstract
Many extensions of the Standard Model predict new resonances decaying to a $Z$, $W$, or Higgs boson and a photon. This paper presents a search for such resonances produced in $pp$ collisions at $\sqrt{s} = 13$ $\mathrm{TeV}$ using a dataset with an integrated luminosity of 36.1 fb$^{-1}$ collected by the ATLAS detector at the Large Hadron Collider. The $Z/W/H$ bosons are identified through their decays to hadrons. The data are found to be consistent with the Standard Model expectation in the entire investigated mass range. Upper limits are set on the production cross section times branching fraction for resonance decays to $Z/W+\gamma$ in the mass range from 1.0 to 6.8 $\mathrm{TeV}$, and for the first time into $H+\gamma$ in the mass range from 1.0 to 3.0 $\mathrm{TeV}$.
Highlights
Many proposals for physics beyond the Standard Model (SM) include the prediction of new massive bosons
This paper describes a search for massive neutral and charged bosons decaying to a photon and a Z, W, or Higgs boson with subsequent hadronic decay of these bosons
Results are presented from a search for heavy resonances pdeffiscffi a1⁄4yi1n3g to Zγ, Wγ, or Hγ TeV pp collision final data states using 36.1 fb−1 of collected by the ATLAS
Summary
Many proposals for physics beyond the Standard Model (SM) include the prediction of new massive bosons. The identification of Z, W, and Higgs bosons exploits properties of the highly boosted bosons with merged dijet energy clusters reconstructed as a large-radius jet The advantage of this final state is that a large fraction of events from the heavy resonance decay is detected since the branching fraction of Z and W bosons into hadrons is approximately 70%. The CMS experiment performed searches for a heavy resonance decaying to a photon and a hadronically or lepptonffiffiically decaying Z boson using data sets collected at s 1⁄4 7, 8, and 13 TeV [11,12,13,14]. Considered for a spin-2 resonance decaying to Zγ [15], a spin-1 resonance decaying to Wγ [16], and for the first time a spin-1 Hγ resonance
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