# 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

4 Laboratoire de Physique Corpusculaire
LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
Abstract : 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.
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Journal articles
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http://hal.in2p3.fr/in2p3-00668406
Contributor : Claudine Bombar Connect in order to contact the contributor
Submitted on : Thursday, February 9, 2012 - 5:05:08 PM
Last modification on : Thursday, December 16, 2021 - 2:11:29 PM

### Citation

G. Aad, L. Aperio Bella, B. Aubert, N. Berger, J. Colas, et al.. 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. Physics Letters B, Elsevier, 2012, 710, pp.383-402. ⟨10.1016/j.physletb.2012.03.005⟩. ⟨in2p3-00668406⟩

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