Updated measurements of the Higgs boson at 125 GeV in the two photon decay channel (original) (raw)
| CMS Physics Analysis Summaries | |
|---|---|
| Report number | CMS-PAS-HIG-13-001 |
| Title | Updated measurements of the Higgs boson at 125 GeV in the two photon decay channel |
| Corporate author(s) | CMS Collaboration |
| Collaboration | CMS Collaboration |
| Subject category | Particle Physics - Experiment |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Abstract | Results are reported from a search for the Standard Model Higgs boson in the two photon channel in the mass range 110<mH<150110 < m_H < 150110<mH<150 GeV, using the full dataset recorded by the CMS experiment at the LHC from pp collisions at centre-of-mass energies of 7 and 8 TeV. The most sensitive, MVA, analysis observes an excess of events at a mass of 125 GeV, with a local significance of 3.2$\sigma$ (standard deviations), where a local significance of 4.2$\sigma$ is expected from a standard model Higgs boson. The best-fit signal strength, sigma/sigmaSM\sigma/\sigma_{SM}sigma/sigmaSM, is 0.78pm0.270.78\pm 0.270.78pm0.27 at mH=125m_H = 125mH=125 GeV, and the mass is fitted to be 125.4pm0.5(stat.)pm0.6(syst.)125.4 \pm 0.5(stat.) \pm 0.6(syst.)125.4pm0.5(stat.)pm0.6(syst.). The cut-based analysis observes a corresponding excess with a local significance of 3.9$\sigma$ (3.5$\sigma$ expected), and sigma/sigmaSM=1.11pm0.31\sigma/\sigma_{SM} = 1.11 \pm 0.31sigma/sigmaSM=1.11pm0.31 at mH=124.5m_H = 124.5mH=124.5 GeV. All measurements are compatible among themselves and with a Higgs boson with a mass of 125.4 GeV. |
| Other source | Inspire |
| Related | superseded by: CERN-PH-EP-2014-117, CERN-PH-EP-2014-265 |
Email contact: cms-pag-conveners-higgs@cern.ch                                Fulltext in PDF Figure_001 Figure_002-a Figure_002-b Figure_002-c Figure_002-d Figure_002-e Figure_003-a Figure_003-b Figure_003-c Figure_003-d Figure_003-e Figure_003-f Figure_004-a Figure_004-b Figure_004-c Figure_005-a Figure_005-b Figure_006-a Figure_006-b Figure_007-a Figure_007-b Figure_008-a Figure_008-b Figure_009-a Figure_009-b Figure_010-a Figure_010-b Figure_011-a Figure_011-b Figure_012 Additional information for the analysis (restricted access) |
Record created 2013-03-21, last modified 2018-06-15