Measurements of gluon-gluon fusion and vector-boson fusion Higgs boson production cross-sections in the $H \to WW^{\ast} \to e\nu\mu\nu$ decay channel in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector

TL;DR

This paper reports measurements of Higgs boson production cross-sections via gluon-gluon fusion and vector-boson fusion in proton-proton collisions at 13 TeV, using the ATLAS detector, aligning with Standard Model expectations.

Contribution

First measurement of Higgs production cross-sections in the $H o WW^{ ext{*}}$ decay channel at 13 TeV with detailed analysis of gluon-gluon fusion and vector-boson fusion processes.

Findings

Measured gluon-gluon fusion cross-section: 11.4 pb

Measured vector-boson fusion cross-section: 0.50 pb

Results agree with Standard Model predictions

Abstract

Higgs boson production cross-sections in proton-proton collisions are measured in the $H \to WW^{\ast} \to e\nu\mu\nu$ 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 fb$^{-1}$. The product of the $H \to WW^{\ast}$ branching fraction times the gluon-gluon fusion and vector-boson fusion cross-sections are measured to be $11.4 ^{+1.2}_{-1.1} (\mathrm{stat.}) ^{+1.8}_{-1.7}(\mathrm{syst.})$ $\mathrm{pb}$ and $0.50 ^{+0.24}_{-0.22} (\mathrm{stat.}) \pm 0.17(\mathrm{syst.})$ $\mathrm{pb}$, respectively, in agreement with the Standard Model predictions.