Combined Measurement of the Higgs Boson Mass from the $H\to \gamma \gamma $ and $H\to Z{Z}^{*}\to 4\ell $ Decay Channels with the ATLAS Detector Using $\sqrt{s}=7$, 8, and 13 TeV $pp$ Collision Data

A measurement of the mass of the Higgs boson combining the $H\to Z{Z}^{*}\to 4\ell $ and $H\to \gamma \gamma $ decay channels is presented. The result is based on $140\text{}\text{}{\mathrm{fb}}^{-1}$ of proton-proton collision data collected by the ATLAS detector during LHC run 2 at a center-of-mass energy of 13 TeV combined with the run 1 ATLAS mass measurement, performed at center-of-mass energies of 7 and 8 TeV, yielding a Higgs boson mass of $125.11±0.09\left(\mathrm{stat}\right)±0.06\left(\mathrm{syst}\right)=125.11±0.11\text{}\text{}\mathrm{GeV}$. This corresponds to a 0.09% precision achieved on this fundamental parameter of the Standard Model of particle physics.