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

Fox, Harald and Barton, Adam and Borissov, Guennadi and Bouhova-Thacker, Evelina and Brodbeck, Timothy and Catmore, James and Chilingarov, Alexandre and Davidson, Ruth and de Mora, Lee and Dearnaley, William and Henderson, Robert and Hughes, Gareth and Jones, Roger and Kartvelishvili, Vakhtang and Long, Robin and Love, Peter and Ratoff, Peter and Smizanska, Maria and Walder, James (2012) 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. Physical review letters, 108 (11). ISSN 1079-7114

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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.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. © 2012 CERN, for the ATLAS Collaboration
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
64452
Deposited By:
Deposited On:
13 May 2013 08:18
Refereed?:
Yes
Published?:
Published
Last Modified:
06 Aug 2020 02:01