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<font color="#000099"><b><font color="#3333ff">Physics Seminar<br>
Tuesday, December 15, 2009<br>
11:00AM<br>
F 113<br>
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<font color="#cc0000">Heidi Schellman
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Northwestern University</font>
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"From Zero to Z-Zero : Weak and Strong Interactions at Many Energy
Scales"
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Physical observables such as coupling constants depend on the process
scale in a way which can be calculated - if you know all of the
particles and interactions involved. I will discuss several examples
of ways in which experiments at JLab and Fermilab measure the same
observables at different scales and what this may be telling us about
the strong and weak interactions.<br>
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