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arXiv · 0903.4205

Exclusive photoproduction of {\bf $Υ$} mesons at HERA

ZEUS Collaboration
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Abstract

The exclusive photoproduction reaction gamma p --> Upsilon p has been studied with the ZEUS experiment in ep collisions at HERA using an integrated luminosity of 468 pb^{-1}. The measurement covers the kinematic range 60<W<220 GeV and Q^2<1 GeV^2, where W is the photon-proton centre-of-mass energy and Q^2 is the photon virtuality. These results, which represent the analysis of the full ZEUS data sample for this channel, are compared to predictions based on perturbative QCD.

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ZEUS Collaboration. 2009-03-24. Exclusive photoproduction of {\bf $Υ$} mesons at HERA. https://doi.org/10.1016/j.physletb.2009.07.066

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