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Accessing transversity via J/Psi production in polarized p-pbar interactions

M. Anselmino·V. Barone·A. Drago·N. N. Nikolaev
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Abstract

We discuss the possibility of a direct access to transversity distributions by measuring the double transverse spin asymmetry A_TT in p pbar --> J/Psi + X --> l^- l^+ + X processes at future GSI-HESR experiments with polarized protons and anti-protons. In the J/Psi resonance production region, with 30 < s < 45 GeV^2, both the cross-section and A_TT are expected to be sufficiently large to allow a measurement of h_1^q(x,M^2); numerical estimates are given.

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M. Anselmino, V. Barone, A. Drago, N. N. Nikolaev. 2004-05-22. Accessing transversity via J/Psi production in polarized p-pbar interactions. https://doi.org/10.1016/j.physletb.2004.05.029

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