Quartic Gauge-Higgs couplings: constraints and future directions

Anisha, , Atkinson, O., Bhardwaj, A., Englert, C. and Stylianou, P. (2022) Quartic Gauge-Higgs couplings: constraints and future directions. Journal of High Energy Physics, 2022(172), (doi: 10.1007/JHEP10(2022)172)

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Abstract

Constraints on quartic interactions of the Higgs boson with gauge bosons have been obtained by the experimental LHC collaborations focussing on the so-called κ framework of flat rescalings of SM-like interactions in weak boson fusion (WBF) Higgs pair production. While such approaches are admissible to obtain a qualitative picture of consistency with the SM when the statistical yield is low, once more statistics become available a more theoretically consistent framework of limit setting is desirable. Reviewing the constraints provided at the Large Hadron Collider, we first show that these limits are robust when considered in a leading order context. Turning to radiative corrections, we demonstrate the limitations of this approach in the SM, and by adopting Higgs effective field theory techniques, we clarify the sensitivity from single Higgs measurements to rescalings of quartic Higgs-gauge couplings. We then discuss avenues for sensitivity improvements of WBF analyses employing Graph Neural Networks to combat the large contributing backgrounds.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Atkinson, Mr Oliver and Anisha, Dr Anisha and Stylianou, Mr Panagiotis and Bhardwaj, Dr Akanksha and Englert, Professor Christoph
Authors: Anisha, , Atkinson, O., Bhardwaj, A., Englert, C., and Stylianou, P.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Journal of High Energy Physics
Publisher:Springer
ISSN:1126-6708
ISSN (Online):1029-8479
Published Online:26 October 2022
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Journal of High Energy Physics 2022: 172
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
313214STFC Glasgow Physics 2020 DTPDavid IrelandScience and Technology Facilities Council (STFC)ST/V506692/1P&S - Physics & Astronomy
311961BSM interference effects in Higgs and Top-associated final states.Christoph EnglertLeverhulme Trust (LEVERHUL)RPG-2021-031P&S - Physics & Astronomy
306883Research in Particle Physics Theory - Phenomenology from lattice QCD and collider physicsChristine DaviesScience and Technology Facilities Council (STFC)ST/T000945/1P&S - Physics & Astronomy
311961BSM interference effects in Higgs and Top-associated final states.Christoph EnglertLeverhulme Trust (LEVERHUL)RPG-2021-031P&S - Physics & Astronomy
306883Research in Particle Physics Theory - Phenomenology from lattice QCD and collider physicsChristine DaviesScience and Technology Facilities Council (STFC)ST/T000945/1P&S - Physics & Astronomy
308821STFC Glasgow 2019 DTPMartin HendryScience and Technology Facilities Council (STFC)ST/T506102/1P&S - Physics & Astronomy