Constraints on the trilinear Higgs coupling from vector boson fusion and associated Higgs production at the LHC

被引:0
作者
Wojciech Bizoń
Martin Gorbahn
Ulrich Haisch
Giulia Zanderighi
机构
[1] University of Oxford,Rudolf Peierls Centre for Theoretical Physics
[2] University of Liverpool,Department of Mathematical Sciences
[3] CERN,undefined
[4] Theoretical Physics Department,undefined
来源
Journal of High Energy Physics | / 2017卷
关键词
Effective Field Theories; Higgs Physics; Perturbative QCD;
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摘要
We examine the constraints on the trilinear Higgs coupling λ that originate from associated (V h) and vector boson fusion (VBF) Higgs production in pp collisions in the context of the Standard Model effective field theory. The 1-loop contributions to pp → Vh and pp → jjh that stem from insertions of the dimension-6 operator O6 = −λ (H†H)3 are calculated and combined with the Oλ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$ \mathcal{O}\left(\lambda \right) $$\end{document} corrections to the partial decay widths of the Higgs boson. Employing next-to-next-to-leading order QCD predictions, we analyse the sensitivity of current and forthcoming measurements of the signal strengths in Vh and VBF Higgs production to changes in λ. We show that future LHC runs may be able to probe modifications of λ with a sensitivity similar to the one that is expected to arise from determinations of double-Higgs production. The sensitivity of differential Vh and VBF Higgs distributions to a modified h3 coupling is also studied.
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