Anomalous Higgs-boson coupling effects in HWW production at the LHC

Understand

We study the LHC associated production of a Higgs boson and a W^+W^- vector-boson pair at 14 TeV, in the Standard Model and beyond.

• We consider different signatures corresponding to the cleanest H and W decay channels, and discuss the potential of the high-luminosity phase of the LHC.
• In particular, we investigate the sensitivity of the HWW production to possible anomalous Higgs couplings to vector bosons and fermions.
• Since the b-quark initiated partonic channel contributes significantly to this process, we find a moderate sensitivity to both the size and sign of an anomalous top-quark Yukawa coupling, because perturbative unitarity in the standard model implies a destructive interference in the b b-bar subprocess.