Search for the Standard Model Higgs Boson in the Diphoton Decay Channel with 4.9fb-1 of pp Collision Data at s=7TeV with ATLAS
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 4.9fb-1 collected with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a center-of-mass energy of s=7TeV. 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.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 2012
- DOI:
- 10.1103/PhysRevLett.108.111803
- arXiv:
- arXiv:1202.1414
- Bibcode:
- 2012PhRvL.108k1803A
- Keywords:
-
- 14.80.Bn;
- 12.15.Ji;
- 14.70.Bh;
- Standard-model Higgs bosons;
- Applications of electroweak models to specific processes;
- Photons;
- High Energy Physics - Experiment
- E-Print:
- 6 pages plus author list (19 pages total), 4 figures, 3 tables, matches published version in Physical Review Letters