4–9 Oct 2015
Europe/Berlin timezone

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

6 Oct 2015, 14:00
20m
Oral Presentation High Energy and High Pt Interactions High Energy and High Pt Interactions

Speakers

Stefan Gieseke (KIT)Dr Stefan Kluth (MPI für Physik)

Description

A study of QCD coherence is presented based on a sample of about 397,000 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.

Primary authors

Ms Nadine Fischer (Monash University) Prof. Peter Skands (Monash) Dr Simon Plätzer (Durham) Stefan Gieseke (KIT) Dr Stefan Kluth (MPI für Physik)

Presentation materials