Measurements of gluon–gluon fusion and vector-boson fusion Higgs boson production cross-sections in the → → Decay Channel in Collisions at with the ATLAS detector

Higgs boson production cross-sections in proton–proton collisions are measured in the $H\to W{W}^{⁎}\to e\nu \mu \nu $ decay channel. The proton–proton collision data were produced at the Large Hadron Collider at a centre-of-mass energy of 13 TeV and recorded by the ATLAS detector in 2015 and 2016, corresponding to an integrated luminosity of $36.1\phantom{\rule{0.25em}{0ex}}{\text{fb}}^{-1}$. The product of the $H\to \phantom{\rule{0.2em}{0ex}}W{W}^{⁎}$ branching fraction times the gluon–gluon fusion and vector-boson fusion cross-sections are measured to be ${11.4}_{-1.1}^{+1.2}{\left(\mathrm{stat}.\right)}_{-1.7}^{+1.8}\left(\mathrm{syst}.\right)\phantom{\rule{0.25em}{0ex}}\text{pb}$ and ${0.50}_{-0.22}^{+0.24}\left(\mathrm{stat}.\right)±0.17\left(\mathrm{syst}.\right)\phantom{\rule{0.25em}{0ex}}\text{pb}$, respectively, in agreement with Standard Model predictions.