2022 Impact factor 4.4
Particles and Fields
Eur. Phys. J. C 26, 411-415 (2003)
DOI: 10.1140/epjc/s2002-01078-1

Vector meson photoproduction at high- t and comparison to HERA data

J.R. Forshaw and G. Poludniowski

Department of Physics and Astronomy, University of Manchester, Manchester M13 9PL, UK

(Received: 23 May 2002 / Published online: 9 December 2002)

We explore QCD calculations for the process \(\gamma p\rightarrow VX \) where V is a vector meson, in the region \(s\gg -t \) and \(-t\gg \Lambda _{QCD}^{2} \). We compare our calculations for the \(J/\psi \), \(\phi \) and \(\rho \) mesons with data from the ZEUS Collaboration at HERA and demonstrate that the BFKL approach is consistent with the data even for light mesons, whereas the two-gluon exchange approach is inadequate. We also predict the differential cross-sections for the \(\Upsilon \) and \(\omega \) for which no data are currently available.

© Società Italiana di Fisica, Springer-Verlag 2003