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Curiouser and curiouser: a riddle at the ALICE detector

12/09/25

Sarah Charley

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 illustration depicting scale differences

12/01/07

Terascale

The Terascale is an energy region named for the tera, or million million, electronvolts of energy needed to access it. Physicists are standing at its threshold, poised to enter this uncharted territory of the subatomic world.

12/01/07

Q&A: James Gillies

Hollywood directors, time travelers, journalists, school kids—CERN’s press office sees them all.

12/01/07

Spartan software

Every time Fermilab scientist Tom Schwarz starts up SpartyJet, he inwardly grimaces. The computer program works well. It does a fine job of finding and recording jets—sprays of subatomic particles that emerge from collisions involving protons.

12/01/07

Connecting with Africa

ATLAS, a particle physics experiment at CERN’s Large Hadron Collider, boasts 2000-plus members from 35 countries. But on a map showing where those members come from, one continent is almost mark-free: Africa.

12/01/07

The LHC by mail

Each year the European laboratory CERN welcomes tens of thousands of visitors. Now the lab can visit them back.

11/01/07

Dark energy

In the fall of 1997, I was leading the calibration and analysis of data gathered by the High-z Supernova Search Team, one of two teams of scientists the other was the Supernova Cosmology Projecttrying to determine the fate of our universe: Will it expand forever, or will it halt and contract, r

11/01/07

Author list

The Collider Detector at Fermilab (CDF) is one of two experiments that record the debris of powerful proton-antiproton collisions at the Tevatron particle collider to explore subatomic processes.

11/01/07

Row, row, row...

Monica Dunford couldn’t stop swaying when she finally got out of the boat after 15 hours, 33 minutes, and 15 seconds of hard rowing. The physicist and her four teammates had just won the Tour du Leman, held Sept. 22.

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