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 Λ=O(10)~TeV, and FCC-ee EWPT measurements may be sensitive to Λ=O(30)~TeV. The prospective sensitivities of Higgs and TGC measurements at the ILC250 (FCC-ee) are to Λ=O(1)~TeV (Λ=O(2)~TeV).
@article{arxiv.1510.04561,
title = {Sensitivities of Prospective Future e+e- Colliders to Decoupled New Physics},
author = {John Ellis and Tevong You},
journal= {arXiv preprint arXiv:1510.04561},
year = {2016}
}