Evidence for a new state decaying into two
photons in the search for the standard model Higgs boson in pp collisions

CMS Physics Analysis Summaries
Report number	CMS-PAS-HIG-12-015
Title	Evidence for a new state decaying into two photons in the search for the standard model Higgs boson in pp collisions
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	A search for a Higgs boson decaying into two photons is described. The analysis is performed using datasets recorded by the CMS experiment at the LHC from pp collisions at a centre-of-mass energies of 7~TeV and 8~TeV. The datasets correspond to an integrated luminosity of 5.1 and 5.3~fb$^{-1}$, respectively. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. An excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 125~GeV, with a local significance of 4.1$\sigma$. The global significance of observing an excess with a local significance $\geq$4.1$\sigma$ anywhere in the search range 110--150~GeV is estimated to be 3.2$\sigma$. This result constitutes evidence for the existence of a new state that decays into two photons.
Other source	Inspire
Email contact: cms-pag-conveners-higgs@cern.ch Fulltext in PDF Figure_001-a Figure_001-b Figure_001-c Figure_001-d Figure_001-e Figure_002-a Figure_002-b Figure_002-c Figure_002-d Figure_002-e Figure_002-f Figure_003-a Figure_003-b Figure_004-a Figure_004-b Figure_004-c Figure_005-a Figure_005-b Figure_005-c Figure_006-a Figure_006-b Figure_007-a Figure_007-b Additional information for the analysis (restricted access)