TTP00-18 Kinematic Effects in Quarkonia Production

TTP00-18 Kinematic Effects in Quarkonia Production

TTP00-18 Kinematic Effects in Quarkonia Production

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.

Stefan Wolf
Nucl. Phys. Proc. Suppl. 93 172-175 2001
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