Search for Scalar Diphoton Resonances in the Mass Range 65-600 {GeV} with the {ATLAS} Detector in pp Collision Data at root s=8 {TeV}

ATLAS Collaboration

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A search for scalar particles decaying via narrow resonances into two photons in the mass range 65-600 {GeV} is performed using 20.3 fb(-1) of root s = 8 {TeV} pp collision data collected with the {ATLAS} detector at the Large Hadron Collider. The recently discovered Higgs boson is treated as a background. No significant evidence for an additional signal is observed. The results are presented as limits at the 95\% confidence level on the production cross section of a scalar boson times branching ratio into two photons, in a fiducial volume where the reconstruction efficiency is approximately independent of the event topology. The upper limits set extend over a considerably wider mass range than previous searches.
Original languageEnglish
Article number171801
JournalPhysical Review Letters
Issue number17
Publication statusPublished - 20 Oct 2014



  • LHC

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