UConn Physics Colloquium
Electrons and Mirror Symmetry
University of Massachusetts
We report on the first measurement of the neutral weak force between two electrons from the E158 experiment at the Stanford Linear Accelerator Center. The neutral weak interaction amplitude is isolated by measuring the change under a mirror reflection of the scattering probability of highly energetic longitudinally polarized electrons off unpolarized target electrons. The short range of the weak force (less than 1 femtometer) makes it a good testing ground to search for substructure of the fundamental constituents of matter and for new shorter range forces between them. While the weak force between an electron and positron has been extensively studied, that between two electrons has never directly been measured before. After a description of the experiment, results from the first physics runs will be presented.
Friday, February 20, 2004
(We will meet for refreshments prior to the talk at 3:30 p.m., in the Gant Science Complex, Physics Library, Room P-103.)