1202.1415 (ATLAS Collaboration)

Search for the Standard Model Higgs boson in the decay channel
H->ZZ(*)->4l with 4.8 fb-1 of pp collisions at sqrt(s)=7 TeV with ATLAS    [PDF]

ATLAS Collaboration

This Letter presents a search for the Standard Model Higgs boson in the decay
channel H->ZZ(*)->l+l-l'+l'-, where l,l'=e or mu, using proton-proton
collisions at sqrt(s)=7 TeV recorded with the ATLAS detector and corresponding
to an integrated luminosity of 4.8 fb^-1. The four-lepton mass distribution is
compared with Standard Model background expectations to derive upper limits on
the cross section of a Standard Model Higgs boson with a mass between 110 GeV
and 600 GeV which exclude the mass ranges 134-156 GeV, 182-233 GeV, 256-265 GeV
and 266-415 GeV at the 95% confidence level. The largest upward deviations from
the background-only hypothesis are observed for Higgs boson masses of 125, 244
and 500 GeV with local significances of 2.1, 2.2 and 2.1 standard deviations,
respectively. Once the look-elsewhere effect is considered, none of these
excesses are significant.

View original: http://arxiv.org/abs/1202.1415