Limits on the production of the standard model Higgs boson in pp collisions at ?s=7 TeV with the ATLAS detector

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Erscheinungsjahr:
2011
Medientyp:
Text
Schlagworte:
  • 2201| 3101
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  • 2201| 3101
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Beschreibung:
  • A search for the Standard Model Higgs boson at the Large Hadron Collider (LHC) running at a centre-of-mass energy of 7 TeV is reported, based on a total integrated luminosity of up to 40 pb(-1) collected by the ATLAS detector in 2010. Several Higgs boson decay channels: H -> gamma gamma, H -> ZZ((){*}()) -> llll, H -> ZZ -> LL nu nu, H -> ZZ -> llqq, H -> WW({*}()) -> l nu l nu and H -> WW -> l nu qq (l is e, mu) are combined in a mass range from 110 GeV to 600 GeV. The highest sensitivity is achieved in the mass range between 160 GeV and 170 GeV, where the expected 95\% CL exclusion sensitivity is at Higgs boson production cross sections 2.3 times the Standard Model prediction. Upper limits on the cross section for its production are determined. Models with a fourth generation of heavy leptons and quarks with Standard Model-like couplings to the Higgs boson are also investigated and are excluded at 95\% CL for a Higgs boson mass in the range from 140 GeV to 185 GeV.
Lizenz:
  • info:eu-repo/semantics/restrictedAccess
Quellsystem:
Forschungsinformationssystem der UHH

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oai:www.edit.fis.uni-hamburg.de:publications/10b5520b-7cec-4182-917c-31e5e01e6143