Measurement of W+W- production and search for the Higgs boson in pp collisions at √s = 7 TeV

CMS-EWK-10-009 ; CERN-PH-EP-2011-015 ; arXiv:1102.5429

Preprint in the CERN Document Server


A measurement of W+W- production in pp collisions at √s = 7 TeV and a search for the Higgs boson are reported. The WW candidates are selected in events with two leptons, either electrons or muons. The measurement is performed using LHC data recorded with the CMS detector, corresponding to an integrated luminosity of 36 inverse-picobarns. The pp to W+W- cross section is measured to be 41.1 15.3 (stat) 5.8 (syst) 4.5 (lumi) pb, consistent with the standard model prediction. Limits on WWγ and WWZ anomalous triple gauge couplings are set. The search for the standard model Higgs boson in the W+W- decay mode does not reveal any evidence of excess above backgrounds. Limits are set on the production of the Higgs boson in the context of the standard model and in the presence of a sequential fourth family of fermions with high masses. In the latter context, a Higgs boson with mass between 144 and 207 GeV/c2 is ruled out at 95% confidence level.


WW signal


Contraints on anomalous triple gauge couplings


-- GautierHamelDeMonchenault - 20-Mar-2011

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PNGpng lz_dkg_contourplot2.png r1 manage 27.0 K 2011-03-20 - 10:46 GautierHamelDeMonchenault  
PNGpng lz_dkz_contourplot2.png r1 manage 28.2 K 2011-03-20 - 10:46 GautierHamelDeMonchenault  
PNGpng massdy.png r1 manage 29.6 K 2011-03-20 - 10:14 GautierHamelDeMonchenault  
PNGpng njets_nobtag.png r1 manage 26.1 K 2011-03-20 - 10:17 GautierHamelDeMonchenault  
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