Dijet angular distributions in photoproduction of charm at HERA
(2003) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. B565, p. 87-101 (2003)
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- Abstract
- (en) Dijet angular distributions of photoproduction events in which a $D^{*\pm}$ 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. Comment: 21 pages, 4 tables, 5 figures
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Chekanov, S., & et al. (2003). Dijet angular distributions in photoproduction of charm at HERA. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, B565, 87-101. https://doi.org/10.1016/S0370-2693(03)00752-4 (Original work published 2003)