Prospects of polarized fixed target Drell-Yan experiments

Details Prospects of polarized fixed target Drell-Yan experiments Prospects of polarized fixed target Drell-Yan experiments

2010-12-09

arxiv.org/abs/1012.2051v1

Physics

Nuclear Physics

Nuclear Experiment

8 pages, to appear in the proceedings of the 19th International Spin Physics Symposium (SPIN 2010), Julich, Germany, Sep 27- O

Scientific paper

It has been proposed that the Siverse transverse single spin asymmetry in Drell-Yan production in transversely polarized p+p collisions would have an opposite sign compared to what has been observed in the polarized Semi-Inclusive Deep Inelastic Scattering (SIDIS) experiments. Experimental confirmation or disproval of this prediction would provide a new fundamental test of QCD and shed new light on our theoretical understanding of the transverse spin physics phenomena. We discuss the prospects and physics sensitivities of polarized fixed target Drell-Yan experiments that could utilize the existing proton and other hadron beams at Fermilab, and polarized proton beams at RHIC with a polarized solid proton and/or neutron target option. We show that if realized, the new experiments would provide critical measurements of not only the sign change (or not) of Sivers functions, but also the information of quark and antiquark's Sivers distributions over a wide kinematic range.

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