Evidence for a new state decaying into two photons in the search for the standard model Higgs boson in pp collisions
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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, 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. The global significance of observing an excess with a local
significance 4.1 anywhere in
the search range 110--150~GeV is estimated to be 3.2. This result constitutes evidence for the existence of a new state that decays into two photons.Note:
- Preliminary results
- Data
- p p: scattering
- Higgs particle: mass
- final state: two-photon
- CERN LHC Coll
- background
- CMS
- Higgs particle: search for
- Higgs particle: radiative decay
- cross section: mass dependence
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