Search for a Standard Model Higgs boson in the mass range 200-600 GeV in the H->ZZ->llqq decay channel

Abstract

A search for a heavy Standard Model Higgs boson decaying via H->ZZ->llqq, where l=e or mu, is presented. The search uses a data set of pp collisions at sqrt(s) = 7 TeV, corresponding to an integrated luminosity of 4.7 fb^-1 collected in 2011 by the ATLAS detector at the CERN LHC. No significant excess of events above the estimated background is found. Upper limits at 95% confidence level on the production cross section of a Higgs boson with a mass in the range between 200 and 600 GeV are derived. A Standard Model Higgs boson with a mass in the range 300 <= mH <= 322 GeV or 353 <= mH <= 410 GeV is excluded at 95% CL. The corresponding expected exclusion range is 351 <= mH <= 404 GeV at 95% CL.

12 pages plus author list (27 pages total), 4 figures, 1 table, submitted to Physics Letters B

References in corpus (14)

• PYTHIA 6.4 Physics and Manual
• Parton distributions for the LHC
• New parton distributions for collider physics
• Event generation with SHERPA 1.1
• Combined results of searches for the standard model Higgs boson in pp collisions at sqrt(s) = 7 TeV
• 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 PDF4LHC Working Group Interim Recommendations
• NLO Electroweak Corrections to Higgs Boson Production at Hadron Colliders
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• Electroweak and QCD corrections to Higgs production via vector-boson fusion at the LHC
• Strong and electroweak corrections to the production of Higgs+2jets via weak interactions at the LHC
• Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
• The PDF4LHC Working Group Interim Report
• Higgs Pseudo-Observables, Second Riemann Sheet and All That

Cited by in corpus (10)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Search for an additional, heavy Higgs boson in the $H\to ZZ$ decay channel at $\sqrt{s}$ = 8 TeV in $pp$ collision data with the ATLAS detector
• Singlet-like Higgs bosons at present and future colliders
• Interference effects for H --> WW/ZZ --> l anti-nu_l anti-l nu_l searches in gluon fusion at the LHC
• Heavy Higgs signal-background interference in gg --> VV in the Standard Model plus real singlet
• The Higgs Boson in the Standard Model - From LEP to LHC: Expectations, Searches, and Discovery of a Candidate
• BSM Higgs results from ATLAS and CMS
• Standard Model Higgs Boson Searches through the 125 GeV Boson Discovery
• Statistical biases in measurements with multiple candidates
• Higgs boson search at ATLAS