Authors

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

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

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Physics Commons

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