Abstract
We explore the indirect sensitivities to decoupled new physics of prospective precision electroweak measurements, triple-gauge-coupling measurements and Higgs physics at future e + e − colliders, with emphasis on the ILC250 and FCC-ee. The Standard Model effective field theory (SM EFT) is adopted as a model-independent approach for relating experimental precision projections to the scale of new physics, and we present prospective constraints on the Wilson coefficients of dimension-6 operators. We find that in a marginalised fit ILC250 EWPT measurements may be sensitive to new physics scales \( \Lambda = \mathcal{O}(10) \) TeV, and FCC-ee EWPT measurements may be sensitive to \( \Lambda = \mathcal{O}(30) \) TeV. The prospective sensitivities of Higgs and TGC measurements at the ILC250 (FCC-ee) are to \( \Lambda = \mathcal{O}(1) \) TeV \( \Lambda = \mathcal{O}(2) \) TeV).
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Ellis, J., You, T. Sensitivities of prospective future e + e − colliders to decoupled new physics. J. High Energ. Phys. 2016, 89 (2016). https://doi.org/10.1007/JHEP03(2016)089
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DOI: https://doi.org/10.1007/JHEP03(2016)089