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 ...

New technologies are enabling scientists to tackle previously elusive physics problems. The macroscopic realm, which consists of everything from falling balls to orbiting planets, can be explained by ...

A large and unexpected excess of top quark pairs has the physics community excited, but the interpretation is still up for debate. In 1995, Alexander Grohsjean cut out a story from the local German ...

The LHCb experiment at CERN has revealed a fundamental asymmetry in the behavior of particles called baryons. “The reason why it took longer to observe CP violation in baryons than in mesons is down ...

Once a year, the Large Hadron Collider smashes lead ions. But how do scientists get a heavy metal into a particle accelerator? Inside an ordinary-looking cupboard in an ordinary-looking office, ...

The 16-part course, currently in its pilot phase, is catered to high school students but available to anyone interested in learning about the fundamental questions in particle physics. Jeff Wiener ...

Meet the short-lived particle that helps the sun shine. Visible matter is made from only a handful of particles, but many more are behind the scenes, affecting what those matter particles do. The W ...

The CMS experiment is developing a new type of trigger that looks for anomalies. As far back as he can remember, Abhijith Gandrakota has felt a natural pull toward physics. “For me, it’s a fundamental ...

Nobel Laureate Peter Higgs died earlier this year. Twelve years ago this week, physicists discovered the particle that bears his name. When researchers at the Large Hadron Collider announced the ...

Physics may seem like its own world, but different sectors using machine learning are all part of the same universe. In 2017, Savannah Thais attended the NeurIPS machine-learning conference in Long ...

Electromagnetism and the weak nuclear force are two distinct fundamental forces. That wasn’t always the case. How many fundamental forces are there in our universe? For particle physicists, answering ...

Phenomenologists must make precise predictions for what they expect DUNE data to look like. On July 21, 2017, a group of dignitaries, scientists and engineers gathered in Lead, South Dakota, to hold a ...