LHCb CollaborationShchutska, Lesya2023-10-032023-10-032023-10-03202210.1007/JHEP07(2022)026https://infoscience.epfl.ch/handle/20.500.14299/201233A precision measurement of the ZZ boson production cross-section at s=13s ​=13 TeV in the forward region is presented, using pppp collision data collected by the LHCb detector, corresponding to an integrated luminosity of 5.1 fb−1−1. The production cross-section is measured using Z→μ+μ−Z→μ+μ− events within the fiducial region defined as pseudorapidity 2.0<η<4.52.0<η<4.5 and transverse momentum pT>20pT​>20 GeV/cc for both muons and dimuon invariant mass 60<Mμμ<12060<Mμμ​<120 GeV/c2c2. The integrated cross-section is determined to be σ(Z→μ+μ−)σ(Z→μ+μ−) = 196.4 ±± 0.2 ±± 1.6 ±± 3.9~pb, where the first uncertainty is statistical, the second is systematic, and the third is due to the luminosity determination. The measured results are in agreement with theoretical predictions within uncertainties.text::journal::journal article::research article