In 2023, the ALICE experiment was ready for their best year yet, until a mysterious signal threatened everything. As the LHC wraps up its 2025 lead-ion run, physicists recall how they worked together to solve the puzzle.
An overgrown zebra mussel population at Fermilab received a rude awaking when operations engineers treated the lab’s water cooling system in early June to remove nearly 4000 pounds of mussels.
Chalkboard discussions usually arise spontaneously, with one person explaining something to a small group standing nearby. Scratchings on the board tend to represent fragments of a conversation rather than a complete train of thought.
Peter Fisher was in the audience when Marin Soljacic, a fellow physicist at the Massachusetts Institute of Technology, gave a lunchtime talk about a technology that could transform consumer electronics.
When objects weighing thousands of pounds have to be moved, the call goes out to riggers— specialized teams that work with hoists and cranes. They’re required to wear proper safety gear; and at some point, the riggers at SLAC decided to make a statement with their helmets.
The problem: How to get short-lived radioactive drugs from the nuclear physics lab that makes them to a hospital 2.5 kilometers away, on the far side of a busy campus, in two minutes flat.
A dozen years after it first appeared on the world stage, the top quark is still one of the hottest topics in particle physics. Why is it so much heavier than any other particle? And what can it tell us about the origin of mass and other quantum mysteries?