Measurement of the $ZZ$ Production Cross Section in $pp$ Collisions at $\sqrt{s}$ = 13 TeV with the ATLAS Detector

TL;DR

This paper reports a measurement of the ZZ production cross section in proton-proton collisions at 13 TeV using ATLAS data, confirming consistency with the Standard Model predictions.

Contribution

First measurement of ZZ production cross section at 13 TeV with detailed fiducial and total phase space extrapolations using ATLAS data.

Findings

Measured cross section: 16.7 pb with uncertainties.

Results agree with Standard Model predictions.

Used 3.2 fb$^{-1}$ of data from ATLAS detector.

Abstract

The $ZZ$ production cross section in proton-proton collisions at 13 TeV center-of-mass energy is measured using 3.2 fb$^{-1}$ of data recorded with the ATLAS detector at the Large Hadron Collider. The considered $Z$ boson candidates decay to an electron or muon pair of mass 66-116 GeV. The cross section is measured in a fiducial phase space reflecting the detector acceptance. It is also extrapolated to a total phase space for $Z$ bosons in the same mass range and of all decay modes, giving $16.7^{+2.2}_{-2.0}$(stat.)$^{+0.9}_{-0.7}$(syst.)$^{+1.0}_{-0.7}$(lumi.) pb. The results agree with standard model predictions.