Single Polarisation Asymmetries for Quarkonia in Non-relativistic QCD

Abstract

We find that single spin asymmetries in NRQCD are non-vanishing in general. They are proportional to the imaginary parts of some non-perturbative matrix elements. With statistics of about 10^6 identified J/psi's, or 10^5 identified chi_2, it is possible to measure these imaginary parts even if they are an order of magnitude smaller than the real parts. Such statistics are quite reasonable at polarised HERA N and other future experiments.

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References in corpus (2)

• Chi_1 and Polarisation Asymmetries for Quarkonia at High Orders in Non-relativistic QCD
• Higher Orders in the Colour-Octet Model of J/ψProduction

Cited by in corpus (1)

• Quarkonium Production through Hard Comover Rescattering in Polarized and Unpolarized pp Scattering