Azimuthal Angle Correlations for Higgs Boson plus Multi-Jet Events.

Andersen, J.R.; Arnold, K.; Zeppenfeld, D.

Abstract

At lowest order in perturbation theory, the scattering matrix element for Higgs boson production 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 simultaneously induce large corrections from emissions of hard radiation and thus formation of extra jets. The current study concerns the generalization of CP-studies using the azimuthal angle between dijets beyond tree-level and to events with more than just two jets. By analyzing the High Energy Limit of hard scattering matrix elements we arrive at a set of cuts optimized to enhance the correlation, while maintaining a large cross section, and an observable, which is very stable against higher order corrections. We contrast the description of Higgs boson production in association with jets at different levels: for tree-level hjj and hjjj matrix elements, for hjj matrix elements plus parton shower, and in a recent all-order framework, which converges to the full, all-order perturbative result in the limit of large invariant mass between all produced particles.

Citation

Andersen, J., Arnold, K., & Zeppenfeld, D. (2010). Azimuthal Angle Correlations for Higgs Boson plus Multi-Jet Events. Journal of High Energy Physics, 2010(6), Article 91. https://doi.org/10.1007/jhep06%282010%29091

• Journal Article Type: Article
• Publication Date: 2010-06
• Deposit Date: Nov 19, 2012
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2010
• Issue: 6
• Article Number: 91
• DOI: https://doi.org/10.1007/jhep06%282010%29091