Speaker
Ayres Freitas
(University of Pittsburgh)
Description
New fermions can be searched for directly at high-energy colliders, such as the LHC, or indirectly through precision measurements at e+e- colliders like FCC-ee. This talk presents the complementarity of these approaches for a broad class of simplified fermionic dark sectors models. The lightest new fermion could be stable or unstable. For the Higgs precision measurements we primarily focus on e+e- -> ZH, which is modified by the new fermions at the 1-loop level, and we also comment on the role of Higgs braching fractions and electroweak precision constraints.
Primary author
Ayres Freitas
(University of Pittsburgh)
Co-author
Qian Song
(Ghent University)
