A likelihood-based reconstruction algorithm for top-quark pairs and the KLFitter framework

A likelihood-based reconstruction algorithm for arbitrary event topologies is introduced and, as an example, applied to the single-lepton decay mode of top-quark pair production. The algorithm comes with several options which further improve its performance, in particular the reconstruction efficien...

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Vydáno v:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Ročník 748; s. 18 - 25
Hlavní autoři: Erdmann, Johannes, Guindon, Stefan, Kröninger, Kevin, Lemmer, Boris, Nackenhorst, Olaf, Quadt, Arnulf, Stolte, Philipp
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier B.V 01.06.2014
Témata:
Accelerators
Algorithms
Decay
Detectors
Jets
Kinematic fit
Modular
Reconstruction
Top-quark physics
Top-quark reconstruction
Topology
Kinematic fit
Top-quark reconstruction
Top-quark physics
ISSN:0168-9002, 1872-9576
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Shrnutí:A likelihood-based reconstruction algorithm for arbitrary event topologies is introduced and, as an example, applied to the single-lepton decay mode of top-quark pair production. The algorithm comes with several options which further improve its performance, in particular the reconstruction efficiency, i.e., the fraction of events for which the observed jets and leptons can be correctly associated with the final-state particles of the corresponding event topology. The performance is compared to that of well-established reconstruction algorithms using a common framework for kinematic fitting. This framework has a modular structure which describes the physics processes and detector models independently. The implemented algorithms are generic and can easily be ported from one experiment to another.
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content type line 23
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2014.02.029