Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 9, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP09(2017)014
Keywords
Beyond Standard Model; Effective Field Theories; Higgs Physics
Categories
Funding
- European Commission through Marie Curie Career Integration [631962]
- Helmholtz Association through recruitment initiative
- Office of the National Administrative Committee of Postdoctoral Researchers of China (ONACPR)
- DESY
- Collaborative Research Center of the Deutsche Forschungsgemeinschaft (DFG), Particles, Strings and Early Universe [SFB676]
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Precision study of electroweak symmetry breaking strongly motivates the construction of a lepton collider with center-of-mass energy of at least 240 GeV. Besides Higgsstrahlung (e(+)e(-) -> hZ), such a collider would measure weak boson pair production (e(+)e(-) -> WW) with an astonishing precision. The weak-boson-fusion production process (e(+)e(-) -> v (v) over barh) provides an increasingly powerful handle at higher center-of-mass energies. High energies also benefit the associated top-Higgs production (e(+)e(-) t (t) over barh) that is crucial to constrain directly the top Yukawa coupling. The impact and complementarity of differential measurements, at different center-of-mass energies and for several beam polarization configurations, are studied in a global effective-field-theory framework. We define a global determinant parameter (GDP) which characterizes the overall strengthening of constraints independently of the choice of operator basis. The reach of the CEPC, CLIC, FCC-ee, and ILC designs is assessed.
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