Medium-energy physics

Strontium: The Best Clock and So Much More
Abstract:
The second generation JILA 87Sr optical lattice clock recently demonstrated both the lowest systematic uncertainty and frequency instability of any clock. This achievement stands on the shoulders of recent breakthroughs in atomic, optical, and quantum physics. In this talk, I will describe the work that culminated in strontium's clock crown.
Quarks in the looking glassFebruary 5, 2014

A recent experiment carried out at Jefferson Lab (including researchers from Argonne) to study a rare instance of symmetry breaking in electron-quark scattering has provided a new determination of an intrinsic property of quarks that's five times more precise than the previous measurement.