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-------- Original Message --------
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject: </th>
<td>Theory Center Seminar (Corrected Version)</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Date: </th>
<td>Fri, 11 Jan 2013 15:30:44 -0500</td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">From: </th>
<td>Mary Fox <a class="moz-txt-link-rfc2396E" href="mailto:mfox@jlab.org"><mfox@jlab.org></a></td>
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">To: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:jlab-seminars@jlab.org">jlab-seminars@jlab.org</a>, Cynthia Lockwood
<a class="moz-txt-link-rfc2396E" href="mailto:lockwood@jlab.org"><lockwood@jlab.org></a></td>
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<pre>Theory Center Seminar
Monday, Jan. 14, 2013
CEBAF Center, L102
1:00 p.m. (coffee at 12:45 p.m.)
Daniel Pitonyak
Temple University
Single- and Double-Spin Asymmetries in Hard Scattering Processes
Experimental data has recently become available on the transverse target
single-spin
asymmetry (SSA) for inclusive DIS. I will present analytical and
numerical results for this
observable, which also have implications for the current extractions of
the Qiu-Sterman
function T_F(x,x) that arises in transverse SSAs from pp collisions.
Possible resolutions
to the so-called "sign-mismatch" crisis including a new calculation of
the fragmentation
contribution to the transverse SSA in pp collisions will also be
explored. Moreover,
extensive work has been done on the leading-twist (twist-2)
double-longitudinal spin
asymmetry A_LL. Here I will focus on the analysis of the
longitudinal-transverse spin
asymmetry A_LT for photon, hadron, and jet production from pp
collisions. Furthermore,
I will discuss how this observable could give insight into both the A_LL
and transverse
SSA domains.
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