Combined search for the Standard Model Higgs boson using up to 4.9 fb−1 of pp collision data at sqrt(s)=7 TeV with the ATLAS detector at the LHC

, The ATLAS collaboration (2012) Combined search for the Standard Model Higgs boson using up to 4.9 fb−1 of pp collision data at sqrt(s)=7 TeV with the ATLAS detector at the LHC. Physics Letters B, 710 (1). pp. 49-66. ISSN 0370-2693

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Abstract

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 (σ). The local significances of H→γγH→γγ, H→ZZ(⁎)→ℓ+ℓ−ℓ′+ℓ′− and H→WW(⁎)→ℓ+νℓ′−ν¯, the three most sensitive channels in this mass range, are 2.8σ, 2.1σ and 1.4σ, 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, 2.2σ.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Additional Information:
This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are credited.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
64447
Deposited By:
Deposited On:
13 May 2013 08:14
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Dec 2020 01:53