Event Weighting vs. Event Counting

Abstract

Goal of these proceedings is to introduce a method based on event weighting in particle physics experiments. Weighting means that events are not just counted as integer numbers but are assigned a weight factor according to their importance in the analysis. This method has a close connection to the maximum likelihood method known to reach the smallest statistical error. The purpose of this document is to give a more educational overview on the subject. As an example the extraction of a beam polarization from scattered particles is discussed.

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