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Search for the standard model Higgs boson in the decay channel H→ZZ→4l in pp collisions at √s=7TeV

Chatrchyan, S ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1103/PhysRevLett.108.111804
  3. Publisher: 2012
  4. Abstract:
  5. A search for a Higgs boson in the four-lepton decay channel H→ZZ, with each Z boson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range of 110100GeV (with 13 below 160GeV), while 67.1±6.0 (9.5±1.3) events are expected from background. The four-lepton mass distribution is consistent with the expectation of standard model background production of ZZ pairs. Upper limits at 95% confidence level exclude the standard model Higgs boson in the ranges of 134-158GeV, 180-305GeV, and 340-465GeV. Small excesses of events are observed around masses of 119, 126, and 320GeV, making the observed limits weaker than expected in the absence of a signal
  6. Keywords:
  7. CMS detectors ; Confidence levels ; Decay channels ; Higgs boson ; Integrated luminosity ; Invariant mass ; Mass distribution ; Muon pairs ; Standard model ; The standard model ; Upper limits ; Z Bosons ; Standards ; Tellurium compounds ; Bosons
  8. Source: Physical Review Letters ; Volume 108, Issue 11 , March , 2012 ; 00319007 (ISSN)
  9. URL: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.108.111804