"Physics in the Mirror World: Using Parity Violation to Study Quarks in the Proton"
Prof. David Armstrong
College of William and Mary
Nature is left handed - due to the weak
interaction, the interactions of
particles are different when viewed in a mirror, i.e. under the parity
transformation. This remarkable property provides nuclear physicists with a
unique tool to study the quark substructure of protons and neutrons, in
particular to learn how the fleeting existence of strange quarks contribute
to the way that charge and magnetization are distributed in the nucleon.
These parity-violation experiments at Jefferson Lab and elsewhere are reviewed.