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Search for the Standard Model Higgs Boson in the Diphoton Decay Channel with 4.9  fb−1 of pp Collision Data at √s=7  TeV with ATLAS

ContributorsATLAS Collaboration
Published inPhysical review letters, vol. 108, no. 11, 111803
Publication date2012
Abstract

A search for the standard model Higgs boson is performed in the diphoton decay channel. The data used correspond to an integrated luminosity of 4.9  fb−1 collected with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a center-of-mass energy of s√=7  TeV. In the diphoton mass range 110–150 GeV, the largest excess with respect to the background-only hypothesis is observed at 126.5 GeV, with a local significance of 2.8 standard deviations. Taking the look-elsewhere effect into account in the range 110–150 GeV, this significance becomes 1.5 standard deviations. The standard model Higgs boson is excluded at 95% confidence level in the mass ranges of 113–115 GeV and 134.5–136 GeV.

NoteSelected for a Viewpoint in Physics
Citation (ISO format)
ATLAS Collaboration. Search for the Standard Model Higgs Boson in the Diphoton Decay Channel with 4.9  fb<sup>−1</sup> of <em>pp</em> Collision Data at √s=7  TeV with ATLAS. In: Physical review letters, 2012, vol. 108, n° 11, p. 111803. doi: 10.1103/PhysRevLett.108.111803
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ISSN of the journal0031-9007
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