Article
Differential Cross Sections of D*± Photoproduction in ep Collisions at HERA
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Document Type
Article
Publication Date
5-22-1997
Disciplines
Abstract
Inclusive photoproduction of D*± in ep collisions at HERA has been measured with the ZEUS detector for photon-proton centre of mass energies in the range 115 < W < 280 GeV and photon virtuality Q2 < 4 GeV2. The cross section σ → D*X integrated over the kinematic region pDz.ast;⊥ > 3 GeV and -1.5 < ηD* < 1.0 is (10.6 ± 1.7(stat.) ± 1.61.3 (syst.)) nb. Differential cross sections as functions of pD*⊥, ηD* and W are given. The data are compared with two next-to-leading order perturbative QCD predictions. For a calculation using a massive charm scheme the predicted cross sections are smaller than the measured ones. A recent calculation using a massless charm scheme is in agreement with the data. © 1997 Published by Elsevier Science B.V.
DOI
https://doi.org/10.1016/S0370-2693(97)00422-X
First Department
Physics
Acknowledgements
Accepted version retrieved July 20, 2021 from https://arxiv.org/pdf/hep-ex/9704011.pdf
Citation Information
J. Breitweg, M. Derrick, D. Krakauer, S. Magill, et al.. "Differential Cross Sections of D*± Photoproduction in ep Collisions at HERA" Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Vol. 401 Iss. 1-2 (1997) p. 192 - 206 Available at: http://works.bepress.com/margarita_mattingly/34/