Shedding light on quarkonium formation by producing a photon in association

Abstract

The process AB --> Quarkonium + photon + X, for a heavy quarkonium state such as J/psi or Upsilon, is considered. The ratio of the cross-sections for this process in pp and pp(bar) collisions is shown to be a vary sensitive probe of models of quarkonium formation.

Comments: 8 Pages + 1 fig, Latex (PS file for figure appended to the end of the text), CERN-TH.6748/92