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Theory Center Seminar<br>
Monday, Jan. 13, 2014<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
CEBAF Center, Room L102<br>
<br>
<br>
Jerry Miller<br>
University of Washington, Seattle<br>
<br>
<b>Pionic and Hidden-Color, Six-Quark Contributions to the Deuteron
b1 Structure Function</b><br>
<br>
The b1 structure function is an observable feature of a spin-1
system sensitive to non-nucleonic<br>
components of the target nuclear wave function. The contributions of
exchanged pions in the <br>
deuteron are estimated and found to be of measurable size for small
values of x. A simple model<br>
for a hidden-color, six-quark configurations (with~ 0.15%
probability to exist in the deuteron) <br>
is proposed and found to give substantial contributions for values
of x>0.2. Good agreement with<br>
Hermes data is obtained. Predictions are made for an upcoming JLab
experiment. The Close & Kumano<br>
sum rule is investigated and found to be a useful guide to
understanding various possible effects <br>
that may contribute.<br>
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