Preprint

PUBDB-2017-13604

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Polarimetry at the ILC

Karl, R. (Corresponding author)DESY* ; List, J.DESY*

2017

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Please use a persistent id in citations: doi:10.3204/PUBDB-2017-13604

Abstract: At the ILC, the luminosity-weighted average polarization at the IP needs to be determined at the permille-level. In order to reach this goal, the combined information from the polarimeter and the collision data is required. In this study, a unified approach will be presented, which for the first time combines the cross section measurements with the expected constraints from the polarimeters. Hereby, the statistical and systematical uncertainties are taken into account, including their correlations. This study shows that a fast spin flip frequency is required because it easily reduces the systematic uncertainty, while a non-perfect helicity reversal can be compensated for within the unified approach. The final goal is to provide a realistic estimation of the luminosity-weighted average polarization at the IP to be used in the physic analyses.

Note: 8 pages, conference proceedings LCWS 2016 Morioka Japan

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Contributing Institute(s):

1. Experimente an Lepton Collidern (FLC)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF3-611) (POF3-611)

Experiment(s):

1. Facility (machine) ILC

Appears in the scientific report 2017

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Database coverage:

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