[PAST EVENT] Physics Colloquium

September 19, 2014
4pm - 5pm
Small Hall, Room 111
300 Ukrop Way
Williamsburg, VA 23185Map this location
The puzzle is easy to state: different ways of measuring the proton charge radius give different results, and the difference is seven standard deviations. Now four years after the discovery of this puzzle, the explanation is still not known. We will discuss how the measurements are made, and then will outline a selection of both ordinary and exotic proposals to explain the phenomenon.