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Higgs-boson plus Dijets: Higher-Order Matching for High-Energy Predictions

Andersen, Jeppe R; Hapola, Tuomas; Heil, Marian; Maier, Andreas; Smillie, Jennifer M

Higgs-boson plus Dijets: Higher-Order Matching for High-Energy Predictions Thumbnail


Authors

Tuomas Hapola

Marian Heil

Andreas Maier

Jennifer M Smillie



Abstract

Several important processes and analyses at the LHC are sensitive to higher-order perturbative corrections beyond what can currently be calculated at fixed order. The formalism of High Energy Jets (HEJ) calculates the corrections systematically enhanced for a large ratio of the centre-of-mass energy to the transverse momentum of the observed jets. These effects are relevant in the analysis of e.g. Higgs-boson production in association with dijets within the cuts devised to enhance the contribution from Vector Boson Fusion (VBF). HEJ obtains an all-order approximation, based on logarithmic corrections which are matched to fixed-order results in the cases where these can be readily evaluated. In this paper we present an improved framework for the matching utilised in HEJ, which for merging of tree-level results is mathematically equivalent to the one used so far. However, by starting from events generated at fixed order and supplementing these with the all-order summation, it is computationally simpler to obtain matching to calculations of high multiplicity. We demonstrate that the impact of the higher-multiplicity matching on predictions is small for the gluon-fusion (GF) contribution of Higgs-boson production in association with dijets in the VBF-region, so perturbative stability against high-multiplicity matching has been achieved within HEJ. We match the improved HEJ prediction to the inclusive next-to-leading order (NLO) cross section and compare to pure NLO in the h → γγ channel with standard VBF cuts.

Citation

Andersen, J. R., Hapola, T., Heil, M., Maier, A., & Smillie, J. M. (2018). Higgs-boson plus Dijets: Higher-Order Matching for High-Energy Predictions. Journal of High Energy Physics, 2018(08), Article 090. https://doi.org/10.1007/jhep08%282018%29090

Journal Article Type Article
Acceptance Date Aug 9, 2018
Online Publication Date Aug 16, 2018
Publication Date Aug 16, 2018
Deposit Date Jun 28, 2018
Publicly Available Date Mar 29, 2024
Journal Journal of High Energy Physics
Print ISSN 1126-6708
Publisher Scuola Internazionale Superiore di Studi Avanzati (SISSA)
Peer Reviewed Peer Reviewed
Volume 2018
Issue 08
Article Number 090
DOI https://doi.org/10.1007/jhep08%282018%29090
Related Public URLs https://arxiv.org/abs/1805.04446

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http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This article is distributed under the terms of the Creative Commons
Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in
any medium, provided the original author(s) and source are credited.





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