TUnfold, an algorithm for correcting migration effects in high energy physics

1 October 2012

journal article
research article
Published by IOP Publishing in Journal of Instrumentation

Vol. 7 (10) , T10003
https://doi.org/10.1088/1748-0221/7/10/t10003

Abstract

TUnfold is a tool for correcting migration and background effects in high energy physics for multi-dimensional distributions. It is based on a least square fit with Tikhonov regularisation and an optional area constraint. For determining the strength of the regularisation parameter, the L-curve method and scans of global correlation coefficients are implemented. The algorithm supports background subtraction and the propagation of statistical and systematic uncertainties, in particular those originating from limited knowledge of the response matrix. The program is interfaced to the ROOT analysis framework.

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