%0 Journal Article
%T Kinematic Effects in Quarkonia Production
%A Stefan Wolf
%J Physics
%D 2000
%I arXiv
%R 10.1016/S0920-5632(00)01097-5
%X We investigate energy (momentum) distributions in J/Psi photoproduction and J/Psi production in B meson decay. In particular the upper endpoint region of the spectrum is examined where the effect of soft gluon emission from the ccbar pair becomes important. Constructing a model which is consistent with the so-called shape function formalism we consider these fragmentation effects and show that the relevance of possible colour octet contributions in the photoproduction channel is still inconclusive.
%U http://arxiv.org/abs/hep-ph/0008180v1