Measurement of parton shower observables with OPAL
1 School of Physics and Astronomy, Monash University, Melbourne, Australia
2 Institute for Theoretical Physics, Karlsruhe Institute of Technology, Karlsruhe, Germany
3 Max-Planck-Institute for Physics, Munich, Germany
4 Institute for Particle Physics Phenomenology, Durham University, Durham, United Kingdom
a e-mail: email@example.com
Published online: 4 July 2016
A study of QCD coherence is presented based on a sample of about 397,000 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.
© Owned by the authors, published by EDP Sciences, 2016
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