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arXiv · hep-ph/9902314

Polarized proton-deuteron Drell-Yan processes and parton distributions

S. Hino·S. Kumano
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Abstract

We show in general that there are 108 structure functions in the proton-deuteron Drell-Yan processes. However, there exist only 22 finite ones after integrating the cross section over the virtual-photon transverse momentum \vec Q_T or after taking the limit Q_T->0. There are 11 new structure functions in comparison with the ones of the proton-proton reactions, and they are related to the tensor structure of the deuteron. Parton-model analyses indicate an important tensor structure function V_T^{UQ_0}, which can be measured by a quadrupole spin asymmetry. The Drell-Yan process has an advantage over lepton reactions in finding tensor polarized antiquark distributions. We hope that our studies will be realized in the next-generation RHIC-Spin project and other ones.

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S. Hino, S. Kumano. 1999-02-11. Polarized proton-deuteron Drell-Yan processes and parton distributions. https://doi.org/10.1016/s0375-9474(00)00074-9

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