Search for a Standard Model Higgs boson in the mass range 200-600 GeV in the H -> ZZ -> l(+)l(-)q(q)over-bar decay channel with the ATLAS detector

Aad G., Abbott B., Abdallah J., Khalek S. A. , Abdelalim A. A. , Abdinov O., ...More

PHYSICS LETTERS B, vol.717, pp.70-88, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 717
  • Publication Date: 2012
  • Doi Number: 10.1016/j.physletb.2012.09.020
  • Title of Journal : PHYSICS LETTERS B
  • Page Numbers: pp.70-88


A search for a heavy Standard Model Higgs boson decaying via H -> ZZ -> l(+)l(-)q (q) over bar, where l = e or mu, is presented. The search uses a data set of pp collisions at root 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 GeV <= m(H) 322 <= GeV or 353 GeV <= m(H) <= 410 GeV is excluded at 95% CL The corresponding expected exclusion range is 351 GeV <= m(H) <= 404 GeV at 95% CL. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.