Transversity studies with protons and light nuclei

Details Transversity studies with protons and light nuclei Transversity studies with protons and light nuclei

2011-09-29

arxiv.org/abs/1109.6472v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 6 figures, invited talk at the "XIII Conference on Problems in Theoretical Nuclear Physics in Italy", Cortona, Italy

Scientific paper

A general formalism to evaluate time-reversal odd transverse momentum dependent parton distributions (T-odd TMDS) is reviewed and applied to the calculation of the leading-twist quantities, i.e., the Sivers and the Boer-Mulders functions. Two different models of the proton structure, namely a non relativistic constituent quark model and the MIT bag model, have been used. The results obtained in both frameworks fulfill the Burkardt sum rule to a large extent. The calculation of nuclear effects in the extraction of neutron single spin asymmetries in semi-inclusive deep inelastic scattering off transversely polarized $^3$He is also illustrated. It is found that the nuclear effects described by an Impulse Approximation approach are under theoretical control.

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