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Instruments and methods of investigation


Review of unfolding methods

†  a, b,  a, b, ‡  a, b,  a,  a
a National Research Nuclear University ‘MEPhI’, Kashirskoe shosse 31, Moscow, 115409, Russian Federation
b Demidov Yaroslavl State University, Sovetskaya st. 14, Yaroslavl, 150000, Russian Federation

Very high accuracy and sensitivity have become attainable by modern instruments for experimental measurements of physical quantities in various scientific fields. Yet it is still impossible to completely eliminate the influence of instrumental effects on the result. The measured values of a physical quantity inevitably differ, sometimes significantly, from the true ones. The question therefore arises of restoring the true distributions from the measured ones, taking the specific features of the experiment and the characteristics of scientific instruments into account. Different approaches are in use based on a mathematical model of the instrument and the formulation of the deconvolution problem. We describe this problem, key ideas and methods for its solution, and features and implementation details using the example of elementary particle physics and space physics experiments.

Fulltext pdf (411 KB)
Fulltext is also available at DOI: 10.3367/UFNe.2022.05.039189
Keywords: unfolding, deconvolution, spectrum restoration methods, statistical estimates, Bayesian methods, regularization, binning-free methods, machine learning
PACS: 02.50.−r, 02.60.−x, 96.50.S−, 96.50.sb (all)
DOI: 10.3367/UFNe.2022.05.039189
URL: https://ufn.ru/en/articles/2023/6/d/
001112624000004
2-s2.0-85163239655
2023PhyU...66..628B
Citation: Bogomolov Yu V, Alekseev V V, Levanova O A, Mayorov A G, Malakhov V V "Review of unfolding methods" Phys. Usp. 66 628–642 (2023)
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Received: 23rd, January 2022, revised: 7th, April 2022, 2nd, May 2022

Îðèãèíàë: Áîãîìîëîâ Þ Â, Àëåêñååâ Â Â, Ëåâàíîâà Î À, Ìàéîðîâ À Ã, Ìàëàõîâ Â Â «Îáçîð ìåòîäîâ îáðàòíîé ñâ¸ðòêè» ÓÔÍ 193 669–685 (2023); DOI: 10.3367/UFNr.2022.05.039189

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