R. Gauld
Associated production of a Higgs boson decaying into bottom quarks and a weak vector boson decaying leptonically at NNLO in QCD
Gauld, R.; Ridder, A. Gehrmann-De; Glover, E.W.N.; Huss, A.; Majer, I.
Authors
Abstract
We present the calculation of next-to-next-to-leading order (NNLO) corrections in perturbative QCD for the production of a Higgs boson decaying into a pair of bottom quarks in association with a leptonically decaying weak vector boson: pp → V H+X → ` ¯` bb +¯ X. We consider the corrections to both the production and decay sub-processes, retaining a fully differential description of the final state including off-shell propagators of the Higgs and vector boson. The calculation is carried out using the antenna subtraction formalism and is implemented in the NNLOjet framework. Clustering and identification of b-jets is performed with the flavour-kt algorithm and results for fiducial cross sections and distributions are presented for the LHC at √ s = 13 TeV. We assess the residual theory uncertainty by varying the production and decay scales independently and provide scale uncertainty bands in our results, yielding percent-level accurate predictions for observables in this Higgs production mode computed at NNLO. Confronting a na¨ıve perturbative expansion of the cross section against the customary re-scaling procedure to a fixed branching ratio reveals that starting from NNLO, the latter could be inadequate in estimating missing higher-order effects through scale variations.
Citation
Gauld, R., Ridder, A. G., Glover, E., Huss, A., & Majer, I. (2019). Associated production of a Higgs boson decaying into bottom quarks and a weak vector boson decaying leptonically at NNLO in QCD. Journal of High Energy Physics, 2019(10), Article 2. https://doi.org/10.1007/jhep10%282019%29002
Journal Article Type | Article |
---|---|
Acceptance Date | Sep 2, 2019 |
Online Publication Date | Oct 3, 2019 |
Publication Date | Oct 3, 2019 |
Deposit Date | Oct 18, 2019 |
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 | 2019 |
Issue | 10 |
Article Number | 2 |
DOI | https://doi.org/10.1007/jhep10%282019%29002 |
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Copyright Statement
Open Access. 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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