Showcasing HH production: Benchmarks for the LHC and HL-LHC

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 sens...

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Bibliographic Details
Published in:Physical review. D 2019-03, Vol.99 (5)
Main Authors: Basler, Philipp, Dawson, Sally, Englert, Christoph, Mühlleitner, Margarete
Format: Article
Language:English
Subjects:
Benchmarks
Luminosity
Quarks
Standard model (particle physics)
Online Access:Get full text
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Summary: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.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.99.055048