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Berlin 2005 – scientific programme

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T: Teilchenphysik

T 608: Elektroschwache Wechselwirkung II

T 608.4: Talk

Tuesday, March 8, 2005, 17:15–17:30, TU H3002

Measurement of the Beam Polarization at the ILC using Single-W Production) — •Filip Franco-Sollova1,2, Klaus Desch2, Rolf-Dieter Heuer1,2, and Roman Pöschl11DESY, Notkestrasse 85, 22603 Hamburg — 2Institut für Experimentalphysik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg.
The use of beam polarization at the International Linear Collider will be a powerful tool for high precision analyses, being crucial for the determination of the helicity structure of the electroweak processes and for disentangling different contributions. The magnitude of the beam polarization will be measured using polarimeters. For certain analyses the required degree of precision should be of the order of 0.5%. In order to reach such an accuracy, an alternative method to measure the beam polarization is considered. This study explores the use of a physics process to determine the beam polarization. It is based on the measurement of the rate and LR asymmetry for single-W production in e+e annihilation at √s=500 GeV for the case of longitudinally polarized beams. Detector simulation and background processes are included.

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