TF Talks

ISU Colloq 1/11/10

Tittle: Polarized Electron Scattering at Jefferson Lab

Abstract:

For more than a decade, the Thomas Jefferson National Accelerator Facility has been performing experiments in fundamental nuclear physics using a polarized electron beam and in some cases polarized targets. This talk will focus on two experiments in which ISU is a main contributor. The first experiment uses parity violation to measure two fundamental physics constants, the weak mixing angle and a low energy inelastic constant known as d-delta. A second experiment investigates the quark polarization within a nucleon using both a polarized electron beam and a polarized nuclear target. ISU's role in these endeavors and the opportunities available to students will be described as well as the impact of these measurements on our current description of physics in terms of the "Standard Model".