FCC-ee and the CR effects

Abstract

The proposed new FCC-ee e+e– colliders will be hosted in the Geneva area as the new 100 km tunnel will allow producing collisions at centre-of-mass energies from 90 to 350 GeV and beyond at several interaction points and will be used for a precision measurement at the Z pole, WW threshold, HZ cross section maximum and tt̅ threshold with an unequaled accuracy. New measurements, which will be realized with large amount of data and at high energies accessible at the FCC-ee would allow a detailed study of the Color Reconnection phenomenon, especially in the hadronic WW decays, and would be helpful for other studies, for example in search for these effects in tt̅ and in Higgs decays.