Article
Dijet Angular Distributions in Photoproduction of Charm at HERA
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Document Type
Article
Publication Date
7-17-2003
Disciplines
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.
DOI
https://doi.org/10.1016/S0370-2693(03)00752-4
First Department
Physics
Acknowledgements
Open access article retrieved April 9, 2021 from https://www.sciencedirect.com/science/article/pii/S0370269303007524
Citation Information
S. Chekanov, M. Derrick, D. Krakauer, J. H. Loizides, et al.. "Dijet Angular Distributions in Photoproduction of Charm at HERA" Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Vol. 565 Iss. 1-4 (2003) p. 87 - 101 Available at: http://works.bepress.com/margarita_mattingly/39/