Compact Muon Solenoid
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| CMS-HIG-11-025 ; CERN-PH-EP-2012-025 | ||
| Search for the standard model Higgs boson in the decay channel $ \mathrm { H \to ZZ \to 4 \ell }$ in pp collisions at $\sqrt{s}$ = 7 TeV | ||
| CMS Collaboration | ||
| 9 February 2012 | ||
| Phys. Rev. Lett. 108 (2012) 111804 | ||
| Abstract: A search for a Higgs boson in the four-lepton decay channel H to ZZ, with each Z boson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range 110 < mH < 600 GeV. The analysis uses data corresponding to an integrated luminosity of 4.7 inverse femtobarns recorded by the CMS detector in pp collisions at $\sqrt{s}$ = 7 TeV from the LHC. Seventy-two events are observed with four-lepton invariant mass m[4 leptons] > 100 GeV (with thirteen below 160 GeV), 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 134-158 GeV, 180-305 GeV, and 340 -465 GeV. Small excesses of events are observed around masses of 119, 126, and 320 GeV, making the observed limits weaker than expected in the absence of a signal. | ||
| Links: e-print arXiv:1202.1997 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; CADI line (restricted) ; | ||
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Compact Muon Solenoid LHC, CERN |
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