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

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 meth...

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Bibliographic Details
Published in:Journal of instrumentation 2012-10, Vol.7 (10), p.T10003-T10003
Main Author: Schmitt, S
Format: Article
Language:English
Subjects:
Algorithms
Energy distribution
Instrumentation
Least squares method
Migration
Roots
Uncertainty
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Summary: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.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/7/10/T10003