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Theory Center Seminar
<br>
Monday, Aug. 5, 2013
<br>
1:00 p.m. (coffee at 12:45 p.m.)
<br>
CEBAF Center, Room L102
<br>
<br>
Marc Schlegel
<br>
University of Tuebingen
<br>
<br>
<b>Two-Photon Exchange Effects in Inclusive DIS </b><br>
<br>
The single-spin asymmetry of unpolarized leptons scattering
deep-inelastically
<br>
off transversely polarized nucleons is discussed. This observable is
generated
<br>
by a two-photon exchange between lepton and nucleon. In a partonic
description
<br>
of the asymmetry the non-perturbative part is given in terms of
multiparton
<br>
correlations: quark-gluon correlation functions and quark-photon
correlation
<br>
functions. It is argued that a measurement of this observable may
help to
<br>
constrain multipartonic correlation functions
<br>
<br>
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