Heavy Quarkonium Production in Single Transverse Polarized High Energy Scattering

Details Heavy Quarkonium Production in Single Transverse Polarized High Energy Scattering Heavy Quarkonium Production in Single Transverse Polarized High Energy Scattering

2008-01-28

arxiv.org/abs/0801.4357v1

Phys.Rev.D78:014024,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 4 figures

Scientific paper

10.1103/PhysRevD.78.014024

We formulate the single transverse spin asymmetry in heavy quarkonium production in lepton-nucleon and nucleon-nucleon collisions in the non-relativistic limit. We find that the asymmetry is very sensitive to the production mechanism. The final state interactions with the heavy quark and antiquark cancel out among themselves when the pair are produced in a color-single configuration, or cancel out with the initial state interaction in pp scattering when they are in color-octet. As a consequence, the asymmetry is nonzero in ep collisions only in the color-octet model, whereas in pp collisions only in the color-singlet model.

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