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Double Transverse-Spin Asymmetries in Drell-Yan Processes with Antiprotons

Vincenzo Barone·Alessandro Cafarella·Claudio Coriano'·Marco Guzzi·Philip Ratcliffe
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Abstract

We present next-to-leading order predictions for double transverse-spin asymmetries in Drell--Yan dilepton production initiated by proton--antiproton scattering. The kinematic region of the proposed PAX experiment at GSI: $30\lesssim{s}\lesssim200\GeV^2$ and $2\lesssim{M}\lesssim7\GeV$ is examined. The Drell--Yan asymmetries turn out to be large, in the range 20--40%. Measuring these asymmetries would provide the cleanest determination of the quark transversity distributions.

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Vincenzo Barone, Alessandro Cafarella, Claudio Coriano', Marco Guzzi, Philip Ratcliffe. 2006-05-24. Double Transverse-Spin Asymmetries in Drell-Yan Processes with Antiprotons. https://doi.org/10.1016/j.physletb.2006.07.012

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