Same Sign WW Scattering Process as a Probe of Higgs Boson in pp Collision at $\sqrt{s}$ = 10 TeV

TL;DR

This study investigates same sign WW scattering at 10 TeV pp collisions to probe the Higgs boson, using specific observables to distinguish scenarios with and without the Higgs, achieving significant separation power.

Contribution

It introduces a method to analyze same sign WW scattering at 10 TeV to differentiate Higgs presence, utilizing invariant mass and azimuthal angle observables.

Findings

Good signal significance for Higgs and no-Higgs scenarios.

Separation power of about 4 sigma with expected LHC data.

Effective observables for Higgs detection in WW scattering.

Abstract

WW scattering is an important process to study electroweak symmetry breaking in the Standard Model at the LHC, in which the Higgs mechanism or other new physics processes must intervene to preserve the unitarity of the process below 1 TeV. This channel is expected to be one of the most sensitive to determine whether the Higgs boson exists. In this paper, the final state with two same sign Ws is studied, with a simulated sample corresponding to the integrated luminosity of 60 fb$^{-1}$ in pp collision at $\sqrt{s}=$10 TeV. Two observables, the invariant mass of $\mu\mu$ from W decays and the azimuthal angle difference between the two $\mu$s, are utilized to distinguish the Higgs boson existence scenario from the Higgs boson absence scenario. A good signal significance for the two cases can be achieved. If we define the separation power of the analysis as the distance, in the log-likelihood plane, of pseudo-experiments outcomes in the two cases, with the total statistics expected from the ATLAS and CMS experiments at the nominal centre-of-mass energy of 14 TeV, the separation power will be at the level of 4 $\sigma$.