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<div><font face="Times New Roman, serif" size="6" color="#000080"><b>Old Dominion University</b></font></div>
<div><font face="Times New Roman, serif" size="6" color="#000080"><b>Department of Physics</b></font></div>
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<div><font face="Times New Roman, serif" size="6" color="#1F497D"><b>Nuclear Physics Seminar</b></font></div>
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<div><font face="Times New Roman, serif" size="5" color="#1F497D"><b>Thursday May 24</b><font color="#17365D"><b>, 2012</b></font></font></div>
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<div><font face="Times New Roman, serif" size="5" color="#0070C0"><b>"</b><b>Nucleon Spin Structure: What have we learned</b><b>"</b></font></div>
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<font face="Times New Roman, serif" size="5" color="#1F497D"><b>Dr. </b></font><font face="Times New Roman, serif" size="5" color="#1F497D"><b>Yelena Prok<br>
</b></font><font face="Times New Roman, serif" size="5" color="#1F497D"><b>Christopher Newport University<br>
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<div><font face="Arial, sans-serif" size="4">Understanding the spin structure of the nucleon remains an open challenge of particle physics, nearly 30 years after the initial discovery of the ”spin crisis” by the European Muon Collaboration
at CERN in 1980s. A vast set of polarization data has been accumulated over the next two decades at CERN, DESY and SLAC, with deep inelastic lepton-hadron scattering being a key tool in the investigation of the helicity structure of the nucleon. New data of
unprecedented statistical precision and extensive kinematic coverage have become available more recently from the experiments conducted at Jefferson Lab. Together with the recent results from RHIC, COMPASS and HER-MES, these new data allow us to constrain polarized
parton distributions, test pQCD predictions in the valence region of high-x, and put limits on the gluon contribution to the nucleon spin. In this talk I will give an overview of the current knowledge of the nucleon spin structure and the anticipated data from
future experiments.<br>
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<div><font face="Times New Roman, serif" size="4">Presentation: Physics Conference Room 304 @ 2:30 pm</font></div>
<div><font face="Times New Roman, serif" size="4">Refreshments: @ 2:15pm</font></div>
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<div><font face="Times New Roman, serif" size="4">All are Welcome<font size="3">!</font></font></div>
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