Search for the fermiophobic model Higgs boson decaying into two photons

CMS Physics Analysis Summaries
Report number	CMS-PAS-HIG-12-002
Title	Search for the fermiophobic model Higgs boson decaying into two photons
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 a dataset recorded in 2011 by the CMS experiment at the LHC from pp collisions at a centre-of-mass energy of 7~TeV, and corresponds to an integrated luminosity of 4.8~fb$^{-1}$. Limits are set on the cross section of the fermiophobic model Higgs boson decaying to two photons. The expected exclusion limit at 95\% confidence level increases monotonically between 0.1 and 3.0 times the fermiophobic model cross section in the mass range between 110 and 150~GeV, while the expected exclusion range is below 136~GeV. The observed limit excludes at 95\% confidence level the fermiophobic model Higgs boson decaying into two photons in the mass range 110 to 124~GeV and 128-136~GeV. The largest excess of events over the expected background is observed around 126~GeV. The excess has a local significance of 2.7~$\sigma$. When taking in consideration the look-elsewhere effect in the search range 100$-$150~GeV, the global significance is 1.2~$\sigma$. More data are required to ascertain the origin of this excess.
Other source	Inspire
Email contact: cms-pag-conveners-higgs@cern.ch Fulltext in PDF Figure_001 Figure_002 Figure_003 Figure_004 Figure_005 Figure_006 Additional information for the analysis (restricted access)