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

The ATLAS collaboration
Phys.Rev.Lett. 113 (2014) 171801, 2014

Abstract (data abstract)
CERN-LHC-ATLAS. Measurement of the 95% CL limit on the fiducial production cross-section times branching ratio of a Higgs-like resonance decaying into two photons, as a function of the resonance mass mX. The resonance is assumed to be narrow. The narrow width assumption is valid for natural widths smaller than about 0.09 GeV + 0.01*mX. The interference of the resonance with the continuum background is neglected. The cross-section is reported for a fiducial volume defined as follows: photon |eta| < 2.37, photon energies required to be E1 > 22 GeV and E2 > 22 GeV for mX < 110 GeV. For mX > 110 GeV, mass-dependent cuts are applied on top: E1/mgg > 0.4 and E2/mgg > 0.3, where mgg is the diphoton invariant mass. The particle-level isolation within a cone of size DR=0.4 around each photon is required to be less than 14 GeV.

  • Table 1

    Data from Figure 4 on page 5 of the Preprint


    The measured fiducial cross section limit.

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