# Observation of Z decays to four leptons with the CMS detector at the LHC

@article{Chatrchyan2012ObservationOZ,
title={Observation of Z decays to four leptons with the CMS detector at the LHC},
journal={Journal of High Energy Physics},
year={2012},
volume={2012},
pages={1-28}
}
• Serguei Chatrchyan, +497 authors Hauke Held
• Published 2012
• Physics
• A bstractThe first observation of the Z boson decaying to four leptons in proton-proton collisions is presented. The analyzed data set corresponds to an integrated luminosity of 5.02 fb−1 at $\sqrt{s}=7$ TeV collected by the CMS detector at the Large Hadron Collider. A pronounced resonance peak, with a statistical significance of 9.7 σ, is observed in the distribution of the invariant mass of four leptons (electrons and/or muons) with mass and width consistent with expectations for Z boson… CONTINUE READING

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