CMS
PRELIMINARY
BEYOND SM
Search for a standard model like Higgs boson in the H to ZZ to l+l- q qbar decay channel at sqrt(s)=8 TeV

A search for a standard-model-like Higgs boson decaying into two Z bosons with subsequent decay into two leptons and two quarks, HZZ+qqˉ\mathrm{H\to ZZ\to \ell^+\ell^- q\bar{q}} is performed. The analysis uses 19.7~fb1^{-1} of data collected by the CMS experiment from proton-proton collisions produced in LHC at s=8\sqrt{s} = 8~TeV. The search exploits the kinematic information and the flavor tagging of the leading particles of the event in order to isolate hypothetical Higgs boson-like signals in the 230~\mathrm{Ge\kern -0.1em V} to 1000~\mathrm{Ge\kern -0.1em V} mass range. At high mass the two quarks from the ZZ-decay merge into a single jet and are analyzed with jet-substructure methods. The sensitivity of the analysis is further improved compared to previous similar searches by a dedicated study of a Vector Boson Fusion signatures. We interpret the data in terms of a standard-model-like Higgs boson as well as an electroweak singlet visible through the interference with the recently discovered 125~\mathrm{Ge\kern -0.1em V} boson. No evidence of a signal is found and upper limits are set on the production cross section.

Files

http://cds.cern.ch/record/2001558/files/HIG-14-007-pas.pdf http://cds.cern.ch/record/2001558/files/Figure_014.pdf http://cds.cern.ch/record/2001558/files/Figure_015-c.pdf http://cds.cern.ch/record/2001558/files/Figure_015-d.pdf http://cds.cern.ch/record/2001558/files/Figure_015-b.pdf http://cds.cern.ch/record/2001558/files/Figure_015-f.pdf http://cds.cern.ch/record/2001558/files/Figure_012-b.pdf http://cds.cern.ch/record/2001558/files/Figure_011-b.pdf http://cds.cern.ch/record/2001558/files/Figure_012-a.pdf http://cds.cern.ch/record/2001558/files/Figure_015-a.pdf http://cds.cern.ch/record/2001558/files/Figure_015-e.pdf http://cds.cern.ch/record/2001558/files/Figure_011-a.pdf http://cds.cern.ch/record/2001558/files/Figure_013-b.pdf http://cds.cern.ch/record/2001558/files/Figure_013-a.pdf http://cds.cern.ch/record/2001558/files/Figure_013-c.pdf http://cds.cern.ch/record/2001558/files/Figure_010-a.pdf http://cds.cern.ch/record/2001558/files/Figure_009-a.pdf http://cds.cern.ch/record/2001558/files/Figure_010-b.pdf http://cds.cern.ch/record/2001558/files/Figure_007-c.pdf http://cds.cern.ch/record/2001558/files/Figure_008-b.pdf http://cds.cern.ch/record/2001558/files/Figure_008-a.pdf http://cds.cern.ch/record/2001558/files/Figure_006-f.pdf http://cds.cern.ch/record/2001558/files/Figure_006-e.pdf http://cds.cern.ch/record/2001558/files/Figure_001-b.pdf http://cds.cern.ch/record/2001558/files/Figure_003-a.pdf http://cds.cern.ch/record/2001558/files/Figure_004.pdf http://cds.cern.ch/record/2001558/files/Figure_005-b.pdf http://cds.cern.ch/record/2001558/files/Figure_009-c.pdf http://cds.cern.ch/record/2001558/files/Figure_001-a.pdf http://cds.cern.ch/record/2001558/files/Figure_007-b.pdf http://cds.cern.ch/record/2001558/files/Figure_007-a.pdf http://cds.cern.ch/record/2001558/files/Figure_003-c.pdf http://cds.cern.ch/record/2001558/files/Figure_005-a.pdf http://cds.cern.ch/record/2001558/files/Figure_003-b.pdf http://cds.cern.ch/record/2001558/files/Figure_006-c.pdf http://cds.cern.ch/record/2001558/files/Figure_006-d.pdf http://cds.cern.ch/record/2001558/files/Figure_006-a.pdf http://cds.cern.ch/record/2001558/files/Figure_006-b.pdf http://cds.cern.ch/record/2001558/files/Figure_002.pdf http://cds.cern.ch/record/2001558/files/Figure_009-b.pdf

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