Beyond The Colour-Singlet Model For Inelastic J/ψPhotoproduction

Abstract

Bound-state corrections to $J/\psi$ production from almost real photons are calculated in the colour-singlet model. A systematic, gauge-invariant, theory of hard quarkonium processes is used upto $O(v^2)$, where $v$ is the relative velocity of the quarks. The internal structure of the meson is characterised by two parameters, ${\epsilon }_B/M$ and ${\nabla }^2\varphi (0)/M^2\varphi (0)$, in addition to the usual wavefunction at the origin $\varphi (0)$. These parameters are constrained to be consistent with measured leptonic decay of the $J/\psi$ and hadronic and radiative decays of ${\eta }_c$.

15 pages, latex, no figures

References in corpus (3)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Order m alpha^8 Contributions to the Decay Rate of Orthopositronium
• Systematic gauge invariant approach to heavy quarkonium decays

Cited by in corpus (7)

• Quarkonium Production at High-Energy Colliders
• Theory of hard photoproduction
• Inelastic photoproduction of polarised $J/\psi$
• QCD Analysis of Near-Threshold Photon-Proton Production of Heavy Quarkonium
• Wavefunction corrections and off-forward gluon distributions in diffractive J/psi electroproduction
• The Color Singlet Relativistic Correction in $J/\psi$ Photoproduction
• Heavy-Flavour Production at HERA