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Theory Center Seminar<br>
Wed., May 13, 2015 <br>
2:00 p.m. <i>(coffee at 1:45)</i><br>
CEBAF Center, Room F224-225 <br>
<br>
Juan V. Guerrero <br>
Hampton University & Jefferson Lab <br>
<br>
<br>
<b>Hadron Mass Corrections in Semi-inclusive Deep-inelastic
Scattering</b><br>
<br>
The spin-dependent cross sections for semi-inclusive lepton-nucleon
scattering are derived in the<br>
framework of collinear factorization, including the effects of
masses of the target and produced <br>
hadron at finite momentum transfer squared Q<sup class="moz-txt-sup"><span
style="display:inline-block;width:0;height:0;overflow:hidden">^</span><small>2</small></sup>.
At leading order the cross sections factorize into <br>
products of Parton distribution and fragmentation functions
evaluated in terms of new, mass-<br>
dependent scaling variables. The size of the hadron mass corrections
is estimated at kinematics<br>
relevant for future experiments.
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