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Measurement of cross sections and couplings of the SM Higgs boson in the ZZ decay channel using the ATLAS detector

L. Aperio Bella, on behalf of the ATLAS collaboration

in 38th International Conference on High Energy Physics

Contribution: pdf


The Higgs boson decay to four leptons, provides good
sensitivity for the measurement of its properties due to its high signal-to-background
ratio (S/B), which is better than two for each of the four final states: $4\mu$,
$2e2\mu$, $2\mu2e$ and $4e$, where the
first lepton pair is defined to be the one with the dilepton invariant mass closest to the $Z$ boson mass.
These proceedings summarise several preliminary results on the properties of the Higgs boson decaying to four leptons final state
using $14.8$~fb$^{-1}$ of integrated luminosity collected in $pp$ collisions by the ATLAS detector at the LHC
at a centre-of-mass energy of 13 TeV. The results include measurements of the fiducial cross sections, the different
production mode cross sections and a test of beyond the Standard Model interactions using
an effective Lagrangian approach.