Showcasing HH production: benchmarks for the (HL-)LHC

Basler, P., Dawson, S., Englert, C. and Mühlleitner, M. M. (2019) Showcasing HH production: benchmarks for the (HL-)LHC. Physical Review D, 99, 055048. (doi: 10.1103/PhysRevD.99.055048)

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Current projections suggest that the LHC will have only limited sensitivity to di-Higgs production in the Standard Model (SM), possibly even after the completion of its high-luminosity phase. Multi-Higgs final states play a fundamental role in many extensions of the SM as they are intrinsically sensitive to modifications of the Higgs sector. Therefore, any new observation in multi-Higgs final states could be linked to a range of beyond the SM (BSM) phenomena that are not sufficiently addressed by the SM. Extensions of the Higgs sector typically lead to new phenomenological signatures in multi-Higgs final states that are vastly different from the SM expectation. In this work, we provide a range of signature-driven benchmark points for resonant and nonresonant BSM di-Higgs production that motivate non-SM kinematic correlations and multifermion discovery channels. Relying on theoretically well-motivated assumptions, special attention is devoted to the particular case where the presence of new physics will dominantly manifest itself in multi-Higgs final states.

Item Type:Articles
Additional Information:We want to thank Jonas Wittbrodt for providing us with the C2HDM data sample. P. B. acknowledges the support by the DFG-funded Doctoral School Karlsruhe School of Elementary and Astroparticle Physics: Science and Technology (KSETA). S. D. is supported by the U.S. Department of Energy under Grant Contract No. DESC0012704. C. E. is supported by the IPPP Associateship scheme and by the UK Science and Technology Facilities Council (STFC) under Grant No. ST/P000746/1.
Glasgow Author(s) Enlighten ID:Englert, Professor Christoph
Authors: Basler, P., Dawson, S., Englert, C., and Mühlleitner, M. M.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN (Online):2470-0029
Copyright Holders:Copyright © 2019 APS
First Published:First published in Physical Review D 99:055048
Publisher Policy:Reproduced under a Creative Commons license

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
729782Phenomenology from Lattice QCD and Collider PhysicsChristine DaviesScience & Technology Facilities Council (STFC)ST/P000746/1S&E P&A - PHYSICS & ASTRONOMY