Measurement of the WZ production cross section in pp collisions at $\sqrt{s} = 7$ and 8 $\,\text{TeV}$ and search for anomalous triple gauge couplings at $\sqrt{s} = 8\,\text{TeV} $

The WZ production cross section is measured by the CMS experiment at the CERN LHC in proton–proton collision data samples corresponding to integrated luminosities of 4.9

\,\text{fb}^{-1}

collected at

\sqrt{s} = 7\,\text{TeV}

, and 19.6

\,\text{fb}^{-1}

at

\sqrt{s} = 8\,\text{TeV}

. The measurements are performed using the fully-leptonic WZ decay modes with electrons and muons in the final state. The measured cross sections for

71< m_{\mathrm{Z}} < 111\,\text{GeV}

are

\sigma ({\mathrm{p}\mathrm{p}}\rightarrow {\mathrm{W}\mathrm{Z}},~\sqrt{s} = 7\,\text{TeV}) = 20.14 \pm 1.32\,\text{(stat)} \pm 0.38\,\text{(theo)} \pm 1.06\,\text{(exp)} \pm 0.44\,\text{(lumi)}

\,\text{pb}

and

\sigma ({\mathrm{p}\mathrm{p}}\rightarrow {\mathrm{W}\mathrm{Z}},~\sqrt{s} = 8\,\text{TeV}) = 24.09 \pm 0.87\,\text{(stat)} \pm 0.80\,\text{(theo)} \pm 1.40\,\text{(exp)} \pm 0.63\,\text{(lumi)}

\,\text{pb}

. Differential cross sections with respect to the

\mathrm{Z}

boson

p_{\mathrm{T}}

, the leading jet

p_{\mathrm{T}}

, and the number of jets are obtained using the

\sqrt{s} = 8\,\text{TeV}

data. The results are consistent with standard model predictions and constraints on anomalous triple gauge couplings are obtained.

Note:

Replaced with the published version. Added the journal reference and DOI. All figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/SMP-14-014

p p: colliding beams
vector boson: pair production
Z0: leptonic decay
W: leptonic decay
channel cross section: measured
coupling: gauge
p p: scattering
differential cross section: measured
transverse momentum dependence
multiplicity: dependence

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Measurement of the WZ production cross section in pp collisions at s=7\sqrt{s} = 7s​=7 and 8 TeV\,\text{TeV}TeV and search for anomalous triple gauge couplings at s=8 TeV\sqrt{s} = 8\,\text{TeV} s​=8TeV

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Measurement of the WZ production cross section in pp collisions at $\sqrt{s} = 7$ and 8 $\,\text{TeV}$ and search for anomalous triple gauge couplings at $\sqrt{s} = 8\,\text{TeV}$