ATLAS Collaboration, The, Alam, Muhammad, Berry, Tracey, Boisvert, Veronique, Brooks, Tim, Cantrill, Rob, Cooper-Smith, Neil, Cowan, Glen, Duguid, Liam, Edwards, Clive, Panduro Vazquez, William, Pastore, Francesca, Rose, Matthew, George, Simon, Goncalo, Ricardo, Hayden, Daniel, Spano, Francesco, Strong, J. A. and Teixeira-Dias, Pedro (2012) Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC. Physics Letters B, 716 (1).
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A search for the Standard Model Higgs boson in proton-proton collisions with the ATLAS detector at the LHC is presented. 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^(*)->llll, 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^(*), bbbar and tau^+tau^- in the 7 TeV data and results from improved analyses of the H->ZZ^(*)->llll 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 1.7x10^-9, is compatible with the production and decay of the Standard Model Higgs boson.
This is a Approved version This version's date is: 17/9/2012 This item is not peer reviewed
https://repository.royalholloway.ac.uk/items/93cf5fe9-853a-8ab3-5ff9-122f513080b9/4/
Deposited by Research Information System (atira) on 14-Aug-2013 in Royal Holloway Research Online.Last modified on 14-Aug-2013
24 pages plus author list (38 pages total), 12 figures, 7 tables, revised author list, matches version to appear in Physics Letters B