<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
</head>
<body text="#000000" bgcolor="#FFFFFF">
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.
</body>
</html>