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Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons
CMS Collaboration Bean, Alice
CMS Collaboration
Bean, Alice
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Abstract
A search for a standard model Higgs boson decaying into a pair of τ leptons is performed using events recorded by the CMS experiment at the LHC in 2011 and 2012. The dataset corresponds to an integrated luminosity of 4.9 fb−1 at a centre-of-mass energy of 7 TeV and 19.7 fb−1 at 8 TeV. Each τ lepton decays hadronically or leptonically to an electron or a muon, leading to six different final states for the τ -lepton pair, all considered in this analysis. An excess of events is observed over the expected background contributions, with a local significance larger than 3 standard deviations for m H values between 115 and 130 GeV. The best fit of the observed H → τ τ signal cross section times branching fraction for m H = 125 GeV is 0.78 ± 0.27 times the standard model expectation. These observations constitute evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons.
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This is the published version.
Date
2014-05
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Springer Verlag
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Keywords
Hadron-Hadron Scattering, Higgs physics
Citation
The CMS collaboration. "Evidence for the 125 GeV Higgs boson decaying to a pair of τ leptons." Journal of High Energy Physics. May, 2014: v5n5. http://dx.doi.org/10.1007/JHEP05(2014)104