| Thème(s) : |
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| Titre : |
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Higgs Searches in ATLAS |
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| Auteur : |
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A.C. Schaffer1 |
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| Laboratoire : |
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| Résumé : |
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This talk covers the results of a search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC. The datasets used correspond to integrated luminosities of approximately 4.8 fb-1 collected at sqrt(s) = 7 TeV in 2011 and 5.8 fb-1 at sqrt(s) = 8 TeV in 2012. Individual searches in the channels H->ZZ(*)->4l, H->\gamma\gamma\ and H->WW(*)->e\nu\mu\nu\ in the 8 TeV data are combined with previously published results of searches for H->ZZ(*), WW(*), bb and \tau+\tau- in the 7 TeV data and results from improved analyses of the H->ZZ(*)->4l and H->\gamma\gamma\ channels in the 7 TeV data. Clear evidence for the production of a neutral boson with a measured mass of 126.0 +/- 0.4 (stat) +/- 0.4 (sys) GeV is presented. This observation, which has a significance of 5.9 standard deviations, corresponding to a background fluctuation probability of 1.7 x 10-9, is compatible with the production and decay of the Standard Model Higgs boson. First measurements of the couplings of this particle are presented and are compatible with a SM Higgs boson hypothesis. |
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| Collaboration/Projet : |
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ATLAS |
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| Type de publication : |
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Communications sans actes |
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| Date de la présentation : |
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15/09/2012 |
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| Nom du colloque : |
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XXXII Physics in Collision 2012 |
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| Ville du colloque : |
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Štrbské Pleso |
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| Pays du colloque : |
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Slovaquie |
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| Date du colloque (début) : |
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12/09/2012 |
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| Date du colloque (fin) : |
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15/09/2012 |
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| Speaker : |
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R.D. Schaffer |
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| Identifiant local : |
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LAL 12-344 |
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| Commentaire : |
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On behalf of the ATLAS Collaboration |
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