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

Abstract

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 $\sqrt{s}$ = 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.

arXiv comment5 pages plus author list + cover page (18 pages total), 4 figures, 2 tables, submitted to Physical Review Letters. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HIGG-2014-04/

References in corpus (21)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• PYTHIA 6.4 Physics and Manual
• PYTHIA 6.2 Physics and Manual
• The ATLAS Simulation Infrastructure
• Observation of a new boson with mass near 125 GeV in pp collisions at sqrt(s) = 7 and 8 TeV
• Evidence for the spin-0 nature of the Higgs boson using ATLAS data
• Improved luminosity determination in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector at the LHC
• Measurements of Higgs boson production and couplings in diboson final states with the ATLAS detector at the LHC
• NLO Higgs boson production via vector-boson fusion matched with shower in POWHEG
• Study of the mass and spin-parity of the Higgs boson candidate via its decays to Z boson pairs
• NLO Higgs boson production via gluon fusion matched with shower in POWHEG
• A Minimal Spontaneously Broken Hidden Sector and its Impact on Higgs Boson Physics at the Large Hadron Collider
• Measurement of the Higgs boson mass from the $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ channels with the ATLAS detector using 25 fb${}^{-1}$ of $pp$ collision data
• Measurement of the inclusive isolated prompt photon cross section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• The Higgs Singlet extension parameter space in the light of the LHC discovery
• On the characterisation of the underlying event
• Influence of strongly coupled, hidden scalars on Higgs signals
• Search for signatures of extra dimensions in the diphoton mass spectrum at the Large Hadron Collider
• Measurement of the isolated diphoton cross-section in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector
• Search for extra dimensions using diphoton events in 7 TeV proton-proton collisions with the ATLAS detector

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