| Autor: |
Collaboration, ATLAS, Alam, Muhammad, Berry, Tracey, Boisvert, Veronique, Cowan, Glen, Edwards, Clive, George, Simon, Goncalo, Ricardo, Hayden, Daniel, Misiejuk, Andrzej, Pastore, Francesca, Rose, Matthew, Spano, Francesco, Strong, J.A., Teixeira-Dias, Pedro |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
|
| Zdroj: |
Physics Letters B, 710 (1) |
| Popis: |
A combined search for the Standard Model Higgs boson with the ATLAS experiment at the LHC using datasets corresponding to integrated luminosities from 1.04 fb-1 to 4.9 fb-1 of pp collisions collected at sqrt(s) = 7 TeV is presented. The Higgs boson mass ranges 112.9-115.5 GeV, 131-238 GeV and 251-466 GeV are excluded at the 95% confidence level (CL), while the range 124-519 GeV is expected to be excluded in the absence of a signal. An excess of events is observed around mH ~ 126 GeV with a local significance of 3.5 standard deviations (sigma). The local significance of H -> gamma gamma, H -> ZZ(*) -> lll'l' and H -> WW(*) -> lvl'v, the three most sensitive channels in this mass range, are 2.8 sigma, 2.1 sigma and 1.4 sigma, respectively. The global probability for the background to produce such a fluctuation anywhere in the explored Higgs boson mass range 110-600 GeV is estimated to be ~1.4% or, equivalently 2.2 sigma. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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