Fragmentation production of J/psi and psi' at the Tevatron

Paper

Abstract

We present a calculation of the charm and gluon fragmentation contributions to inclusive

and

production at large transverse momentum at the Tevatron. For

production, we include both fragmentation directly into

and fragmentation into

followed by the radiative decay

. We find that fragmentation overwhelms the leading-order mechanisms for prompt

production at large

, and that the dominant contributions come from fragmentation into

. Our results are consistent with recent data on

production from the CDF and D0 experiments. In the case of prompt

production, the dominant mechanism at large

is charm fragmentation into

. We find serious disagreement between our theoretical predictions and recent

data from the Tevatron.