Combined measurement of the Higgs boson production and decay at $\sqrt{s}$ = 13 TeV with the ATLAS detector

Since the discovery of the Higgs boson in 2012, the measurement of its properties have become one of the main focus in the ATLAS Collaboration. To measure these properties, the main Higgs production modes at LHC---gluon Fusion (ggF), Vector Boson Fusion (VBF) and associated production with vector bosons or top quarks (VH, ttH)---are considered, together with minor production modes. In addition, the main measurable decay channels are taken into account, both bosonic ($H\to ZZ^{\ast}$, $\gamma\gamma$, $WW^{\ast}$) and fermionic ($\to\tau\tau$, $bb$). The combination of the individual Higgs boson analyses allows to improve the precision of the properties measurements. Moreover, it enables to access independently cross sections and branching ratios, as well as a finer granularity in the measurement of the Simplified Template Cross Sections (STXS). The combination therefore enables more stringent tests of the nature of the Higgs boson. The procedure to combine the different Higgs boson analyses performed in the ATLAS experiment will be discussed in this presentation, with a focus on the combined measurement of the inclusive Higgs production modes cross-sections. The results obtained for the inclusive cross-sections as well as for the STXS will then be presented.