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<tt>Theory Center Seminar<br>
Monday, Feb. 7, 2011<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
CEBAF Center, Room L104<br>
<br>
Zhongbo Kang<br>
Brookhaven National Laboratory<br>
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<pre><tt>
<b><span></span>Single Transverse Spin Asymmetry: Progress and Puzzles<span></span></b>
In this talk, I review some recent progress on the study of single
transverse spin asymmetry with particular emphasis on some very puzzling
facts on the so-called Sivers effect which we have recently found.
I will discuss how to resolve these puzzles and outline how to test
different scenarios.
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