Speaker
Description
One of the challenges for future e+e- colliders is adequate control of
the center-of-mass energy, and the associated luminosity spectrum.
For linear colliders at all energies and for circular colliders
at center-of-mass energies above 200 GeV one can not rely on resonant
beam depolarization and must use collision data driven methods.
The contribution will focus on progress related to this issue based on
reconstruction of di-muon events that leverages a precise tracker momentum
scale calibration, and will discuss a few of the electroweak measurements
such as the W and Z masses and widths and the left-right asymmetry that are
made feasible particularly at a linear collider. The talk will also address
associated detector performance requirements.
