Chi_1 and Polarisation Asymmetries for Quarkonia at High Orders in Non-relativistic QCD

Abstract

We study doubly polarised asymmetries of c-cbar and b-bbar mesons in hadro- and photo-production at low transverse momentum in non-relativistic QCD to high orders in the relative velocity of the pair, v. We give the complete set of expressions required for the asymmetries up to order v^9. The asymmetries in the production of eta_{c,b} states are a stable measure of the polarised gluon densities. The asymmetries for chi_{c,b}, J/psi, psi', and the various Upsilon states are stringent tests of the NRQCD scaling relations.

21 pages LaTeX including 2 figures

References in corpus (2)

• Double-Spin Asymmetry of J/psi Production in Polarized pp Collisions at HERA-$\vec{N}$
• Higher Orders in the Colour-Octet Model of J/ψProduction

Cited by in corpus (6)

• J/Psi and Psi' Polarizations in Polarized Proton-Proton Collisions at the RHIC
• Measurements of double-helicity asymmetries in inclusive $J/\psi$ production in longitudinally polarized $p+p$ collisions at $\sqrt{s}=510$ GeV
• Quarkonium Polarization in Non-relativistic QCD and the Quark-Gluon Plasma
• Color Octet Contribution to J/psi Photoproduction Asymmetries
• Quarkonium Production through Hard Comover Rescattering in Polarized and Unpolarized pp Scattering
• Single Polarisation Asymmetries for Quarkonia in Non-relativistic QCD