Search for the Higgs Boson in the Fully Leptonic W+W- Final State

This is a condensed description with plots for the analysis LINK TO CDS

Abstract

This paper reports a search for the Higgs boson decaying to W+W- in pp collisions at sqrt{s} = 7TeV. The analysis is performed using LHC data recorded with the CMS detector, corresponding to an integrated luminosity of 1.1 fb-1. W+W- candidates are selected in events with two leptons, electrons or muons. No significant excess above the standard model background expectation is observed, and upper limits on Higgs boson production are derived, excluding the presence of Higgs boson with a mass in [150 - 190] GeV/c^2 range at 95\% C.L. For a Higgs boson with a mass of 160 GeV/c2 the observed (expected) upper limit is about 0.6 (0.3) times the standard model prediction.

Main Results

• Cut based analysis results: Higgs Cross section / SM Higgs Cross section limits evaluated with CLs method.

• multivariate analysis results: Higgs Cross section / SM Higgs Cross section limits evaluated with CLs method.

	png,pdf,eps	Missing energy for low PU and high PU in Drell Yan events
	png,pdf,eps	Comparison of number of reconstructed vertices versus the number of pile-up interacations for various reconstruction algorithms
	png,pdf,eps	Jet veto efficiency as a function of the number of primary vertices
	png,pdf,eps	Projected missing transverse momentum algorithms versus number of reconstructed vertices
	png,pdf,eps	Projected track missing transverse momentum versus projected particle flow missing transverse momentum in simulated Drell-Yan events
	png,pdf,eps	Projected track missing transverse momentum versus projected particle flow missing transverse momentum in simulated signal events
	png,pdf,eps	Projected track missing transverse momentum versus projected particle flow missing transverse momentum in 1.1 /fb of data
	png,pdf,eps	Number of reconstructed anti-kt (R=0.5) jets in data compared to simulated signal and background samples
	png,pdf,eps	Number of b-tagged jets in the one-jet analysis in data compared to simulated signal and background samples
	png,pdf,eps	Minimum of projected track missing transverse momentum and projected particle flow missing transverse momentum in data compared to simulated signal and background samples after trigger selections
	png,pdf,eps	Difference in azimuthal angle between the two leptons in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Invariant mass of the two leptons in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Transverse Higgs mass in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Minimum of projected track missing transverse momentum and projected particle flow missing transverse momentum in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Trailing lepton transverse momentum in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Leading lepton transverse momentum in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Difference in azimuthal angle between the two leptons in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Invariant mass of the two leptons in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Transverse Higgs mass in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Minimum of projected track missing transverse momentum and projected particle flow missing transverse momentum in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Trailing lepton transverse momentum in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Leading lepton transverse momentum in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	BDT output for opposite flavor events in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	BDT output for same flavor events in the 0-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	BDT output for opposite flavor events in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	BDT output for same flavor events in the 1-jet bin in data compared to simulated signal and background samples after the WW selection
	png,pdf,eps	Expected limits for background only case and mean-observed limits in the presence of a Higgs with mh = 120 GeV
	png,pdf,eps	Expected limits for background only case and mean-observed limits in the presence of a Higgs with mh = 130 GeV
	png,pdf,eps	Expected limits for background only case and mean-observed limits in the presence of a Higgs with mh = 140 GeV
	png,pdf,eps	Expected limits for background only case and mean-observed limits in the presence of a Higgs with mh = 150 GeV
	png,pdf,eps	Cut-based (all jet bins) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (all jet bins, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (all jet bins, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (0-jet bin) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (0-jet bin, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (0-jet bin, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (1-jet bin) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (1-jet bin, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (1-jet bin, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (2-jet bin) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (2-jet bin, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (2-jet bin, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (all jet bins) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (all jet bins, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (all jet bins, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (0-jet bin) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (0-jet bin, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (0-jet bin, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (1-jet bin) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (1-jet bin, zoom) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (1-jet bin, log-x) modified frequentist 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (all jet bins) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (0-jet bin) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (1-jet bin) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (2-jet bin) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (all jet bins) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (0-jet bin) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Shape-based (1-jet bin) Bayesian 95% expected and observed confidence level upper limits on the cross section times branching ratio relative to the SM value
	png,pdf,eps	Cut-based (0-jet bin) Bayesian 95% expected limits in the case of background only and mean expected limits in the presence of a Higgs with mh=120 GeV
	png,pdf,eps	Cut-based (0-jet bin) Bayesian 95% expected limits in the case of background only and mean expected limits in the presence of a Higgs with mh=130 GeV
	png,pdf,eps	Cut-based (0-jet bin) Bayesian 95% expected limits in the case of background only and mean expected limits in the presence of a Higgs with mh=140 GeV
	png,pdf,eps	Cut-based (0-jet bin) Bayesian 95% expected limits in the case of background only and mean expected limits in the presence of a Higgs with mh=150 GeV