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<b><font color="#3333ff">Special Seminar</font></b><font color="#000099"><b><font
color="#3333ff"><br>
Monday, August 30, 2010<br>
11:00AM<br>
CEBAF Center AUD.<br>
Cookies & Coffee at 10:45AM<br>
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</font></b></font>
<p class="MsoNormal"><span style="font-size: 14pt;">"Feasibility Test
of Large
Rapidity Drell Yan Production at RHIC" <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size: 14pt;"><o:p> </o:p><span
style=""></span>LC Bland<br>
<span style=""> </span>BNL<tt><br>
<br>
</tt>
</span><tt><span style=""> </span>There are common objectives at
RHIC, Jefferson Lab and a future electron-ion collider (EIC) to
understand the
quark and gluon structure of the proton. Perturbative QCD provides a
means of describing observables for p+p/p+nucleus collisions and deep
inelastic
scattering (DIS) in terms of universal distribution and fragmentation
functions.
Recent experiments aimed at understanding proton spin structure have
shown the
importance of spin-correlated, transverse-momentum-dependent
distribution
functions, that describe orbital motion of quarks and gluons.
Color-charge
interactions are required for these functions to produce transverse
single spin
asymmetries. There is a firm theoretical prediction that these color
charge interactions change sign between semi-inclusive DIS and
di-lepton
production, through the Drell Yan (DY) process, in polarized p+p
collisions. This talk will present plans for a feasbility experiment
at
RHIC, aiming to test these theoretical predictions by measuring the
analyzing
power for DY in the forward direction. Results from the feasibility
experiment
can impact designs of future forward detectors aimed at quantifying
effects
from saturation of the gluon density at low x in heavy nuclei. The DY
process is expected to be the most robust probe of universality between
p+p/p+nucleus and DIS, with the latter being a focus at the upgraded
Jefferson
Lab and a future EIC.</tt></p>
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