[Jlab-seminars] Fwd: Theory Center Seminar (Jan. 14) HAS BEEN CANCELLED

[Mary Fox]

-------- Original Message --------
Subject: 	Theory Center Seminar (Corrected Version)
Date: 	Fri, 11 Jan 2013 15:30:44 -0500
From: 	Mary Fox <mfox at jlab.org>
To: 	jlab-seminars at jlab.org, Cynthia Lockwood <lockwood at jlab.org>



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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