4.4 Article

Sensitivities of prospective future e+e- colliders to decoupled new physics

Journal

JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 3, Pages -

Publisher

SPRINGER
DOI: 10.1007/JHEP03(2016)089

Keywords

Beyond Standard Model; Higgs Physics

Funding

  1. London Centre for Terauniverse Studies (LCTS)
  2. European Research Council [26732]
  3. STFC [ST/J002798/1, ST/L000326/1]
  4. Graduate Teaching Assistantship from King's College London
  5. Junior Research Fellowship from Gonville and Caius College, Cambridge
  6. STFC [ST/L000326/1, ST/J002798/1] Funding Source: UKRI
  7. Science and Technology Facilities Council [ST/J002798/1, ST/L000326/1] Funding Source: researchfish

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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 = O(10) TeV, and FCC-ee EWPT measurements may be sensitive to Lambda = O(30) TeV. The prospective sensitivities of Higgs and TGC measurements at the ILC250 (FCC-ee) are to Lambda = O(1) TeV (Lambda = O(2) TeV).

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