https://doi.org/10.1140/epjc/s10052-015-3766-1
Regular Article - Experimental Physics
Measurement of observables sensitive to coherence effects in hadronic Z decays with the OPAL detector at LEP
1
Institute for Theoretical Physics, Karlsruhe Institute of Technology, Karlsruhe, Germany
2
School of Physics and Astronomy, Monash University, Melbourne, Australia
3
Max-Planck-Institute for Physics, Munich, Germany
4
Institute for Particle Physics Phenomenology, Durham University, Durham, United Kingdom
5
School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
6
Theoretical Physics, CERN, Geneva, Switzerland
* e-mail: nadine.fischer@monash.edu
Received:
15
May
2015
Accepted:
30
October
2015
Published online:
30
November
2015
A study of QCD coherence is presented based on a sample of about 397,000 
hadronic annihilation events collected at 
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.
© The Author(s), 2015
