Issue |
EPJ Web of Conferences
Volume 37, 2012
MESON 2012 – 12th International Workshop on Production, Properties and Interaction of MESONS
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Article Number | 01028 | |
Number of page(s) | 6 | |
Section | Plenary talks | |
DOI | https://doi.org/10.1051/epjconf/20123701028 | |
Published online | 06 December 2012 |
https://doi.org/10.1051/epjconf/20123701028
Semi-inclusive DIS Experiments Using Transversely Polarized Targets in Hall-A: Current Results and Future Plans
Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
a e-mail: kalyan@jlab.org
Measurement of single (SSA) and double spin asymmetries (DSA) in semiinclusive DIS reactions using polarized targets provide a powerful method to probe transverse momentum dependent parton distribution functions (TMDs). In particular, the experimentally 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 distribution function (g1T). A recent experiment conducted in Hall-A Jefferson Lab using transversely polarized 3He 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 3He↑(e, e′π±)X. The kinematical range, x = 0.19 ~ 0.34, at Q2 = 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.
© Owned by the authors, published by EDP Sciences, 2012
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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