Séminaires LLR

e+e- physics at the Future Circular Collider

by David d'Enterria (CERN)

Note unusual place! Salle du LMS, ground floor (LMS)

Note unusual place! Salle du LMS, ground floor


The Future Circular Collider (FCC) is a post-LHC project in a new 100-km tunnel under consideration at CERN, that would provide hadron and e+ e− collisions at much higher energies and luminosities than studied so far. The physics program accessible in e+e− collisions at such an FCC-ee facility will be reviewed. The FCC-ee aims at collecting multi-ab−1 integrated luminosities in e+e− at s√ = 90, 160, 240, and 350 GeV, yielding 1012 Z bosons, 108 W+W− pairs, 106 Higgs bosons and 4⋅105 top-quark pairs per year. Such huge and "clean" data samples combined with a O(100keV) c.m. energy uncertainty will allow for Standard Model measurements in the electroweak, Higgs, and top-quark sectors with unparalleled precision, and thereby searches for new physics in regions not probed so far. The FCC-ee will be able to (i) indirectly discover new particles coupling to the Higgs and electroweak bosons up to scales Λ≈ 7 and 100 TeV respectively; (ii) perform competitive SUSY tests at the loop level in regions beyond the LHC reach; and (iii) achieve the best potential in direct collider searches for dark matter and for sterile neutrinos with masses below 60 GeV.