CERN Accelerating science

noimgEvent yields in the single-electron and single-muon channels after the event selection. The table shows the expected number of events including their estimated total uncertainty as well as the number of events observed in the data sample.

The top row shows (left) the $\et$ spectrum of the electron in the single-electron channel and (right) the $\pt$ spectrum of the muon in the single-muon channel. The bottom row shows (left) the missing transverse momentum in the single-electron channel and (right) the $\pt$ spectrum of the leading jet in the single-muon channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the electron in the single-electron channel and (right) the $\pt$ spectrum of the muon in the single-muon channel. The bottom row shows (left) the missing transverse momentum in the single-electron channel and (right) the $\pt$ spectrum of the leading jet in the single-muon channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the electron in the single-electron channel and (right) the $\pt$ spectrum of the muon in the single-muon channel. The bottom row shows (left) the missing transverse momentum in the single-electron channel and (right) the $\pt$ spectrum of the leading jet in the single-muon channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the electron in the single-electron channel and (right) the $\pt$ spectrum of the muon in the single-muon channel. The bottom row shows (left) the missing transverse momentum in the single-electron channel and (right) the $\pt$ spectrum of the leading jet in the single-muon channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the leading electron in the $ee$ channel and (right) the $\pt$ spectrum of the leading muon in the $\mu\mu$ channel. The bottom row shows (left) the missing transverse momentum in the $e\mu$ channel and (right) the $\pt$ spectrum of the leading jet in the $e\mu$ channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the leading electron in the $ee$ channel and (right) the $\pt$ spectrum of the leading muon in the $\mu\mu$ channel. The bottom row shows (left) the missing transverse momentum in the $e\mu$ channel and (right) the $\pt$ spectrum of the leading jet in the $e\mu$ channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the leading electron in the $ee$ channel and (right) the $\pt$ spectrum of the leading muon in the $\mu\mu$ channel. The bottom row shows (left) the missing transverse momentum in the $e\mu$ channel and (right) the $\pt$ spectrum of the leading jet in the $e\mu$ channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

The top row shows (left) the $\et$ spectrum of the leading electron in the $ee$ channel and (right) the $\pt$ spectrum of the leading muon in the $\mu\mu$ channel. The bottom row shows (left) the missing transverse momentum in the $e\mu$ channel and (right) the $\pt$ spectrum of the leading jet in the $e\mu$ channel. The error band shows the statistical uncertainty from the Monte Carlo simulation. The last bin in each distribution includes the overflow.

Distributions of $\costs$ for each of the three simulated signal templates. The templates for the combined (left) single-lepton and (right) dilepton channels are shown.

Distributions of $\costs$ for each of the three simulated signal templates. The templates for the combined (left) single-lepton and (right) dilepton channels are shown.

Distributions of the reconstructed $\costs$ used in the template method for data (markers), fitted background (dotted line), the Standard Model prediction (dashed line) and the best fit value (solid line) for the (left) single-lepton and (right) dilepton channels. The total uncertainties on the helicity fractions for the best fit values are represented by the grey band. For the dilepton channels, each event contributed with two entries, corresponding to the two leptonic decays of the $W$ bosons.

Distributions of the reconstructed $\costs$ used in the template method for data (markers), fitted background (dotted line), the Standard Model prediction (dashed line) and the best fit value (solid line) for the (left) single-lepton and (right) dilepton channels. The total uncertainties on the helicity fractions for the best fit values are represented by the grey band. For the dilepton channels, each event contributed with two entries, corresponding to the two leptonic decays of the $W$ bosons.

Unfolded distributions of $\costs$ for the (left) single-lepton and (right) dilepton channels. The error bars on unfolded data (markers) include both the statistical and systematic contributions. For comparison, the Standard Model NNLO QCD prediction (dashed line) and its uncertainty~\cite{Czarnecki:2010gb} are also shown.

Unfolded distributions of $\costs$ for the (left) single-lepton and (right) dilepton channels. The error bars on unfolded data (markers) include both the statistical and systematic contributions. For comparison, the Standard Model NNLO QCD prediction (dashed line) and its uncertainty~\cite{Czarnecki:2010gb} are also shown.

Overview of the four measurements of the $W$ boson helicity fractions and the combined values. The error bars correspond to the statistical and total uncertainties.

Allowed regions at 68\% and 95\% confidence level (CL) for the $Wtb$ anomalous couplings $\gl$ and $\gr$. In the Standard Model, the anomalous couplings vanish at tree level~\cite{Do:2002ky}.