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arXiv · hep-ph/9609504

J/psi Spin Asymmetries in the Colour-Octet Model

Sourendu Gupta·Prakash Mathews
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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.

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Sourendu Gupta, Prakash Mathews. 1996-09-28. J/psi Spin Asymmetries in the Colour-Octet Model. https://doi.org/10.1103/physrevd.55.7144

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