Ghost contributions to charmonium production in polarized high-energy collisions

Abstract

In a previous paper [Phys. Rev. D 68, 034017 (2003)], we investigated the inclusive production of prompt J/psi mesons in polarized hadron-hadron, photon-hadron, and photon-photon collisions in the factorization formalism of nonrelativistic quantum chromodynamics providing compact analytic results for the double longitudinal-spin asymmetry A_{LL}. For convenience, we adopted a simplified expression for the tensor product of the gluon polarization four-vector with its charge conjugate, at the expense of allowing for ghost and anti-ghosts to appear as external particles. While such ghost contributions cancel in the cross section asymmetry A_{LL} and thus were not listed in our previous paper, they do contribute to the absolute cross sections. For completeness and the reader's convenience, they are provided in this addendum.

5 pages

References in corpus (8)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Photoproduction of Heavy Quarks in Next-to-Leading Order QCD with Longitudinally Polarized Initial States
• Next-to-Leading Order QCD Corrections to the Polarized Photoproduction of Heavy Flavors
• Charmonium production in polarized high-energy collisions
• Next-to-Leading Order QCD Corrections to the Polarized Hadroproduction of Heavy Flavors
• Helicity Amplitudes for Charmonium Production in Hadron-Hadron and Photon-Hadron Collisions
• J/Psi and Psi' Polarizations in Polarized Proton-Proton Collisions at the RHIC
• Inelastic $J/\psi$ production in polarized photon-hadron collisions

Cited by in corpus (2)

• Double longitudinal-spin asymmetries in $J/\psi$ production at RHIC
• Elastic and inelastic $J/\psi$ photoproduction in $p$-$p$ collisions at LHC energies: the feature of Weizsäcker-Williams approximation