cms-analysis / HiggsAnalysis-CombinedLimit

CMS Higgs Combination toolkit.
https://cms-analysis.github.io/HiggsAnalysis-CombinedLimit/latest
Apache License 2.0
75 stars 389 forks source link

Fix pull calculation protection #1012

Open adewit opened 1 month ago

adewit commented 1 month ago

The protection for negligible constraints in the pull calculation used to check for an absolute difference in pre- and post-fit constraint. For most uncertainties this works fine, but if you introduce a param with a value much smaller than 1 the criterion is probably too strict.

This changes the protection to apply if the constraint relative to the input uncertainty is less than sqrt(0.001).