2017/04/30 by Gauthier Durieux, Christophe Grojean, Jiayin Gu +1 · 2 citations
Computer Science · Physics and Astronomy · #Collider #Computational Physics and Python Applications #Electroweak interaction #Higgs boson #Lepton #Little Higgs #Neutrino Physics Research #Pair production #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Symmetry breaking #Yukawa potential #hep-ex #hep-ph
paper · pdf · doi:10.1007/jhep09(2017)014
55 pages, lots of figures, v2: references added, minor corrections, extended discussions on quadratic EFT contributions and beam polarization effects, matches published version in JHEP
openalex created_date 2017/04/28 · openalex publication_date 2017/09/01 · arxiv created 2017/09/05 · arxiv updated 2017/09/20 · openalex updated_date 2026/08/05
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-→ ν νh ) provides an increasingly powerful handle at higher center-of-mass energies. High energies also benefit the associated top-Higgs production ( e+e-→ tth ) 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.