VBS ${\mathrm{W}}^{\pm }{\mathrm{W}}^{\pm }\mathrm{H}$ production at the HL-LHC and a 100 TeV pp-collider

Abstract

${\mathrm{W}}^{\pm }{\mathrm{W}}^{\pm }\mathrm{H}$ production at hadron colliders through vector boson scattering is a so far unconsidered process, which leads to a clean signature of two same-sign charged leptons and two widely separated jets. This process is sensitive to the $\mathrm{HHH}$ and $\mathrm{WWHH}$ couplings and any deviation of these couplings from their SM predictions serves as direct evidence of new physics beyond the SM. In this paper we perform a Monte Carlo study of this process for the $\sqrt{s}=14$ TeV LHC and a $100$ TeV pp-collider, and provide projections of the constraints on the triple-Higgs and $\mathrm{WWHH}$ quartic couplings for these environments. In particular, we consider the impact of pileup on the expected sensitivity in this channel. Our analysis demonstrates that although the sensitivity to the $\mathrm{HHH}$ coupling is rather low, the $\mathrm{WWHH}$ coupling can be constrained in this channel within $\sim 100\%$ and $\sim 20\%$ at 95\% confidence level around the SM prediction at the HL-LHC and a 100 TeV pp-collider, respectively.

12 pages, 6 figures

References in corpus (5)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Expected Performance of the ATLAS Experiment - Detector, Trigger and Physics
• Evaluation of three methods for calculating statistical significance when incorporating a systematic uncertainty into a test of the background-only hypothesis for a Poisson process
• Anomalous Triple Gauge Couplings in the Effective Field Theory Approach at the LHC