Probing the symmetric Higgs portal with di-Higgs boson production

Englert, C. and Jaeckel, J. (2019) Probing the symmetric Higgs portal with di-Higgs boson production. Physical Review D, 100, 095017. (doi: 10.1103/PhysRevD.100.095017)

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Abstract

A coupling of a scalar, U(1) symmetry, to the Standard Model via the Higgs portal is one of the simplest gateways to a dark sector. Yet, for masses m S ≥ m H / 2 there are few probes of such an interaction. In this note we evaluate the sensitivity of di-Higgs production at the LHC as well as at a future FCC-hh, taking into account the full momentum dependence of the process. This significantly impacts the sensitivity compared to estimates of changes in the Higgs-coupling based on the effective potential. We also compare our findings to precision single Higgs probes such as the cross section for production at a future lepton collider, e.g. FCC-ee, as well as searches for missing energy \JJ{based signatures.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Englert, Dr Christoph
Authors: Englert, C., and Jaeckel, J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1550-2368
Copyright Holders:Copyright © 2019 the American Physical Society
First Published:First published in Physical Review D 100:095017
Publisher Policy:Reproduced under a Creative Commons Licence
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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
173809Phenomenology from Lattice QCD and Collider PhysicsChristine DaviesScience and Technology Facilities Council (STFC)ST/P000746/1P&S - Physics & Astronomy