Abstract
Measurement of single (SSA) and double spin asymmetries (DSA) in semi- inclusive DIS reactions using polarized targets provide a powerful method to probe trans- verse momentum dependent parton distribution functions (TMDs). In particular, the ex- perimentally measured SSA on nucleon targets can help in extracting the transversity and Sivers distribution functions of u and d-quarks. Similarly, the measured DSA are sensitive to the quark spin-orbital correlations, and provide an access to the TMD parton distribu- tion function (g1T ). A recent experiment conducted in Hall-A Jefferson Lab using trans- versely polarized 3 He provide first such measurements on effective neutron target. The measurement was performed using 5.9 GeV beam from CEBAF and measured the target SSA/DSA in the SIDIS reaction 3 He (e, e 0 � � )X. The kinematical range, x = 0.19�0.34, at Q 2 = 1.77�2.73 (GeV/c) 2 , was focused on the valence quark region. The results from this measurement along with our plans for future high precision measurements in Hall-A are presented.
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