Speaker
Riccardo Brugnera
(Padova University and INFN)
Description
Inelastic Photo-production of J/Psi mesons is studied in ep-scattering
at HERA. The J/psi decay angular distributions have been measured with
the ZEUS detector, using an integrated luminosity of 468 pb^-1. The
range in photon-proton centre-of-mass energy, W, was 50<W<180 GeV. The
polar and azimuthal angles of the mu+ were measured in the J/psi rest
frame and compared to theoretical predictions at leading and
next-to-leading order in QCD.
Single differential and double differential cross sections are measured
with the H1 detector, using the data taken in the years 2006 and 2007
and corresponding to an integrated luminosity of approximately 166
pb^-1. Precision and purity are increased compared to previous analyses.
The results are compared to theoretical predictions.
Primary authors
Monica Turcato ZEUS Collaboration
(Hamburg University)
Riccardo Brugnera
(Padova University and INFN)
