Document Type
Article
Publication Date
7-17-2003
Abstract
Dijet angular distributions of photoproduction events in which a D*± meson is produced in association with one of two energetic jets have been measured with the ZEUS detector at HERA, using an integrated luminosity of 120 pb-1. Differential cross sections as a function of the angle between the charm-jet and the proton-beam direction in the dijet rest frame have been measured for samples enriched in direct or resolved photon events. The results are compared with predictions from leading-order parton-shower Monte Carlo models and with next-to-leading-order QCD calculations. The angular distributions show clear evidence for the existence of charm originating from the photon. © 2003 Published by Elsevier B.V.
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume
565
Issue
1-4
First Page
87
Last Page
101
DOI
10.1016/S0370-2693(03)00752-4
First Department
Physics
Recommended Citation
Chekanov, S.; Derrick, M.; Krakauer, D.; Loizides, J. H.; Magill, S.; Musgrave, B.; Repond, J.; Yoshida, R.; Mattingly, Margarita C. K.; Antonioli, P.; Bari, G.; Basile, M.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Cara Romeo, G.; Cifarelli, L.; Cindolo, F.; Contin, A.; Corradi, M.; de Pasquale, S.; Giusti, P.; Iacobucci, G.; Margotti, A.; Nania, R.; Palmonari, F.; Pesci, A.; Sartorelli, G.; Zichichi, A.; and Aghuzumtsyan, G., "Dijet Angular Distributions in Photoproduction of Charm at HERA" (2003). Faculty Publications. 2206.
https://digitalcommons.andrews.edu/pubs/2206
Acknowledgements
Open access article retrieved April 9, 2021 from https://www.sciencedirect.com/science/article/pii/S0370269303007524