Measurement of observables sensitive to coherence effects in hadronic Z decays with the OPAL detector at LEP

Nadine Fischer, Stefan Gieseke, Stefan Kluth, Simon Plätzer, Peter Skands, Andrii Verbytskyi

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Abstract

A study of QCD coherence is presented based on a sample of about 397000 e+ e- hadronic annihilation events collected at √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.

Original languageEnglish
Title of host publicationThe European Physical Society Conference on High Energy Physics
EditorsJochen Schieck
Place of PublicationItaly
PublisherProceedings of Science
Number of pages7
ISBN (Electronic)1824-8039
Publication statusPublished - 2015
EventThe European Physical Society Conference on High Energy Physics - University of Vienna, Vienna, Austria
Duration: 22 Jul 201529 Jul 2015
http://eps-hep2015.eu/

Conference

ConferenceThe European Physical Society Conference on High Energy Physics
Abbreviated titleEPS-HEP 2015
CountryAustria
CityVienna
Period22/07/1529/07/15
Internet address

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