CERN Accelerating science

Article
Report number arXiv:1505.01636 ; COEPP-MN-15-2
Title Measurement of observables sensitive to coherence effects in hadronic Z decays with the OPAL detector at LEP
Author(s) Fischer, Nadine (Monash U. ; KIT, Karlsruhe, TP) ; Gieseke, Stefan (KIT, Karlsruhe, TP) ; Kluth, Stefan (Munich, Max Planck Inst.) ; Plätzer, Simon (Durham U., IPPP ; Manchester U.) ; Skands, Peter (CERN ; Monash U.)
Collaboration OPAL collaboration
Publication 2015-11-30
Imprint 07 May 2015
Number of pages 25
In: Eur. Phys. J. C 75 (2015) 571
DOI 10.1140/epjc/s10052-015-3766-1
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; OPAL
Abstract A study of QCD coherence is presented based on a sample of about 397000 $e^+e^-$ hadronic annihilation events collected at $\sqrt{s}=91$ GeV with the OPAL detector at LEP. The study is based on four recently proposed observables that are sensitive to coherence effects in the perturbative regime. The measurement of these observables is presented, along with a comparison with the predictions of different parton shower models. The models include both conventional parton shower models and dipole antenna models. Different ordering variables are used to investigate their influence on the predictions.
Copyright/License arXiv nonexclusive-distrib. 1.0
publication: © 2015-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³

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 Record created 2015-05-09, last modified 2022-08-10


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