Colloquia

Colloquium
Friday, April 11, 2008
4:00 PM
Physics Building, Room 204
Note special time.

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"Nucleon Form Factors...50 Years Later"


John Arrington , Argonne National Lab
[Host: Nilanga Liyanage]
ABSTRACT:
The structure of the proton and neutron can be expressed in terms of the electric and magnetic form factors which can be measured from elastic electron-proton scattering. Fifty years ago, the first electron scattering measurements of the proton form factors started the process of mapping out the distribution of charge and magnetization of the proton. Four decades of measurements gave us a simple picture of the nucleon, but our understanding was severely limited by the experimental techniques and theoretical understanding. The last ten years as provided several new experimental and theoretical techniques, giving us a much clearer picture of nucleon structure, and providing a few surprises along the way.

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