Abstract
We introduce the MINERvA Analysis Toolkit (MAT), a utility for centralizing the handling of systematic uncertainties in HEP analyses. The fundamental utilities of the toolkit are the MnvHnD, a powerful histogram container class, and the systematic Universe classes, which provide a modular implementation of the many universe error analysis approach. These products can be used stand-alone or as part of a complete error analysis prescription. They support the propagation of systematic uncertainty through all stages of analysis, and provide flexibility for an arbitrary level of user customization. This extensible solution to error analysis enables the standardization of systematic uncertainty definitions across an experiment and a transparent user interface to lower the barrier to entry for new analyzers.
Highlights
Despite the importance and complexity of systematic uncertainty evaluation in HEP, there is no community-wide standard for the storage and propagation of uncertainty through analysis infrastructures
We present a solution to this problem, the MINERvA Analysis Toolkit (MAT), which can be adopted to streamline an experiment’s approach to evaluating systematic uncertainty
The MAT (1) implements the many-universe error method, (2) is built on a unique and powerful histogram object (MnvHnD), and (3) offers experiment-wide standardization of systematics and simultaneous customizability and extensibility via Universe classes. This toolkit was developed within the MINERvA analysis environment where it has facilitated dozens of neutrino cross section measurements over the last decade [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34] and forms the basis for MINERvA’s
Summary
Despite the importance and complexity of systematic uncertainty evaluation in HEP, there is no community-wide standard for the storage and propagation of uncertainty through analysis infrastructures. The MAT (1) implements the many-universe error method, (2) is built on a unique and powerful histogram object (MnvHnD), and (3) offers experiment-wide standardization of systematics and simultaneous customizability and extensibility via Universe classes This toolkit was developed within the MINERvA analysis environment where it has facilitated dozens of neutrino cross section measurements over the last decade [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34] and forms the basis for MINERvA’s. This approach to reporting uncertainty is common in HEP, but the many universe technique does not exclude alternative error treatments
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