J/psi Spin Asymmetries in the Colour-Octet Model

Abstract

We investigate the pattern of asymmetries in the colour-octet model for inclusive production of charmonium with polarised initial state hadrons and photons. We find that singly polarised asymmetries vanish. The double polarised asymmetry for J/psi involves a new combination of long-distance matrix element. We also investigate the asymmetries for eta_c, chi_c and Upsilon production. The asymmetries distinguish well between different models of charmonium production.

LaTeX source, 18 pages

References in corpus (13)

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Cited by in corpus (12)

• Double-Spin Asymmetry of J/psi Production in Polarized pp Collisions at HERA-$\vec{N}$
• Hadroproduction of the Chi1 and Chi2 States of Charmonium in 800 GeV/c Proton-Silicon Interactions
• J/Psi and Psi' Polarizations in Polarized Proton-Proton Collisions at the RHIC
• Inelastic $J/\psi$ production in polarized photon-hadron collisions
• Chi_1 and Polarisation Asymmetries for Quarkonia at High Orders in Non-relativistic QCD
• Higher Orders in the Colour-Octet Model of J/ψProduction
• Double Spin Asymmetries in P-wave Charmonium Hadroproduction
• Double longitudinal-spin asymmetries in $J/\psi$ production at RHIC
• Color Octet Contribution to J/psi Photoproduction Asymmetries
• Single Polarisation Asymmetries for Quarkonia in Non-relativistic QCD
• ${\chi }_{cJ}$ Polarization in Polarized Proton-Proton Collisions at RHIC
• ${\psi }^{\prime }$ productions as a test of color-octet mechanism