International Workshop on Future Linear Colliders 2026

ILC, FCC-ee Precision Polarimetry with Difermion and Vector Boson Event Fits

11 Nov 2026, 16:30

20m

Bld.3-1F-Seminar hall (KEK)

Oral presentation (onsite or remote - not decided) Higgs and Electroweak Joint: Higgs/EW and Global Analysis

Speaker

Brendon Madison (University of Kansas)

Description

Precision measurements, especially for integrated luminosity using diphotons, put strict demands on beam polarimetry at future e+e- colliders. This is strictest at the Z pole, where methods to achieve order 10^{-4} on polarimetry are needed. We entertain multiple scenarios for ILC and FCC-ee as the setting for this study. Paths towards order 10^{-4} on polarimetry using Difermion and vector boson containing events. Biases between event fits, such as from depolarization during beam collision, and Compton polarimeter measurements are also discussed.