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Updated: Jan 6, 2026

Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
Higgs Self-Coupling at the Future Circular e^{+}e^{-} Collider
Victor Maura1, Ben A Stefanek2, Tevong You1
1King's College London, Physics Department, Strand, London WC2R 2LS, United Kingdom.
Abstract:
Single Higgs production at FCC-ee probes the Higgs self-coupling at next-to-leading order (NLO). Extracting a bound requires a global analysis accounting for other possible new physics contributions up to NLO. We determine the FCC-ee sensitivity to Higgs self-coupling modifications δκ_{λ} within the standard model effective field theory framework, including for the first time flavor, LEP, LHC, and FCC-ee observables in a global analysis with all leading NLO effects via one-loop renormalization group evolution, as well as incorporating finite NLO contributions to electroweak precision and ZH observables. The global sensitivity to δκ_{λ} is estimated by marginalizing over the effects of all other operators, bringing flavor considerations to the fore. We find that, under reasonable assumptions, FCC-ee sensitivity to δκ_{λ} can exceed that of the HL-LHC.
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