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A pitfall in the use of extended likelihood for fitting fractions of pure samples in mixed samples

The paper elucidates, with an analytic example, a subtle mistake in the application of the extended likelihood method to the problem of determining the fractions of pure samples in a mixed sample from the shape of the distribution of a random variable. This mistake, which affects two widely used software packages, leads to a misestimate of the errors.

preprint2008arXivOpen access
A. Nappi
hep-exphysics.data-an
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Open access1 author2 topics
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