CP-properties of the Higgs-boson couplings from H + dijets through gluon fusion

TL;DR

This paper explores how to accurately determine the CP-properties of the Higgs boson coupling using events with multiple jets in gluon fusion, overcoming challenges from additional radiation.

Contribution

It introduces a novel technique based on high energy limit insights to extract CP-properties from multi-jet events in Higgs production.

Findings

Effective method for CP-property extraction from multi-jet events

Reduction of radiation correction effects in analysis

Enhanced understanding of jet correlations in Higgs production

Abstract

At lowest order in perturbation theory, the production of a Higgs boson in association with dijets displays a strong correlation in the azimuthal angle between the dijets, induced by the CP-properties of the Higgs Boson coupling. However, the phase space cuts necessary for a clean extraction of the CP-properties in the gluon fusion channel simultaneously induce large corrections from emissions of hard radiation and thus formation of additional jets. This contribution discusses how the CP-properties of the Higgs boson coupling can be cleanly extracted from events with more than two jets, based on a technique developed from insight into the high energy limit of hard scattering matrix elements.