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Constructing model-agnostic likelihoods, a method for the reinterpretation of particle physics results

Gärtner, Lorenz ; Hartmann, Nikolai; Heinrich, Lukas; Horstmann, Malin; Kuhr, Thomas; Reboud, Méril; Stefkova, Slavomira 1; Dyck, Danny van
1 Institut für Experimentelle Teilchenphysik (ETP), Karlsruher Institut für Technologie (KIT)

Abstract:

Experimental High Energy Physics has entered an era of precision measurements. However, measurements
of many of the accessible processes assume that the final states’ underlying kinematic distribution is the same as the
Standard Model prediction. This assumption introduces an implicit model-dependency into the measurement, rendering
the reinterpretation of the experimental analysis complicated without reanalysing the underlying data. We present a novel
reweighting method in order to perform reinterpretation of particle physics measurements. It makes use of reweighting
the Standard Model templates according to kinematic signal distributions of alternative theoretical models, prior to per-
forming the statistical analysis. The generality of this method allows us to perform statistical inference in the space of the-
oretical parameters, assuming different kinematic distributions, according to a beyond Standard Model prediction. We
implement our method as an extension to the pyhf software and interface it with the EOS software, which allows us to per-
form flavor physics phenomenology studies. Furthermore, we argue that, beyond the pyhf or HistFactory likelihood specification, only minimal information is necessary to make a likelihood model-agnostic and hence easily reinterpretable. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000172933
Veröffentlicht am 30.07.2024
Originalveröffentlichung
DOI: 10.1140/epjc/s10052-024-13038-4
Scopus
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2024
Sprache Englisch
Identifikator ISSN: 1434-6044, 1434-6052
KITopen-ID: 1000172933
Erschienen in The European Physical Journal C
Verlag Springer-Verlag
Band 84
Heft 7
Seiten Art.-Nr.: 693
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Vorab online veröffentlicht am 14.07.2024
Nachgewiesen in arXiv
Dimensions
Web of Science
Scopus
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