CMS logoCMS event Hgg
Compact Muon Solenoid
LHC, CERN

CMS-TOP-12-040 ; CERN-PH-EP-2013-237
Observation of the associated production of a single top quark and a W boson in pp collisions at $\sqrt{s}$ = 8 TeV
CMS Collaboration
13 January 2014
Phys. Rev. Lett. 112 (2014) 231802
Abstract: The first observation of the associated production of a single top quark and a W boson is presented. The analysis is based on a data set corresponding to an integrated luminosity of 12.2 inverse femtobarns of proton-proton collisions at $\sqrt{s}$ = 8 TeV recorded by the CMS experiment at the LHC. Events with two leptons and a jet originating from a b quark are selected. A multivariate analysis based on kinematic and topological properties is used to separate the signal from the dominant t t-bar background. An excess consistent with the signal hypothesis is observed, with a significance which corresponds to 6.1 standard deviations above a background-only hypothesis. The measured production cross section is 23.4 +/- 5.4 pb, in agreement with the standard model prediction.
Links: e-print arXiv:1401.2942 [hep-ex] (PDF) ; CDS record ; inSPIRE record ; Public twiki page ; HepData record ; CADI line (restricted) ;
Figures CMS Publications
Figures

png pdf 		Figure 1-a:

png pdf 		Figure 1-b:

png pdf 		Figure 2-a:

png pdf 		Figure 2-b:

png pdf 		Figure 2-c:

png pdf 		Figure 3:

png pdf 		Figure 4-a:

png pdf 		Figure 4-b:

png pdf 		Figure 4-c:

png pdf 		Figure 4-d:

png pdf 		Figure 4-e:

png pdf 		Figure 4-f:

png pdf 		Figure 4-g:

png pdf 		Figure 4-h:

png pdf 		Figure 4-i:

png pdf 		Figure 4-j:

png pdf 		Figure 4-k:

png pdf 		Figure 5-a:

png pdf 		Figure 5-b:
Compact Muon Solenoid
LHC, CERN