A joint Fermilab/SLAC publication
Photo of four detectors

LHC and Tevatron share first joint result

An international team of scientists from Fermilab’s Tevatron and CERN’s Large Hadron Collider has produced the world’s best value for the mass of the top quark.

Photo of ANITA part 2

Cosmic rays on demand

At SLAC National Accelerator Laboratory, researchers are using a particle accelerator to help them search for the source of ultra-high-energy cosmic rays.

Steven Ritz, physicist at the University of California Santa Cruz and chair of the P5 panel, presents at this week's P5 meeting

Physicists look toward the high-energy horizon

A panel met at Brookhaven National Laboratory to chart the course for US investment in particle physics experiments.

Photo of Jonathan Rosner

The big questions

Through the “Snowmass” process, US particle physicists thoroughly considered the field’s most compelling unanswered questions and ways to realistically answer them.

Grid of eight physicists holding whiteboards with different physics questions

Unanswered questions

Do you think scientists have the answers to all the questions? As these researchers admit, there’s still so much to discover. Particle physics is brimming with mysteries and unknowns.

Illustration of four profiles "US Participation in the Higgs Discovery"

US participation in the Higgs discovery

The search for the Higgs at experiments at the Large Hadron Collider was an international effort involving thousands of people, with physicists and engineers from US institutions playing a significant role throughout.

Physicists on Great Physics Quest

The great physics quest

In their search for fundamental truths, particle physicists have a lot in common with explorers everywhere. 

Photo of Breaking Snowmass Physicists

Physicists chart path forward

Through the “Snowmass” process, particle physicists discussed the field’s biggest unanswered questions and thoroughly analyzed the tools needed to answer them.

Photo of Snowmass 2013 Opening

Scientists look to next decades in US particle physics

From the output of the "Snowmass" meeting, US particle physicists will chart a path to answering some of science’s most intriguing questions.

Illustration of 5 spools of thread and thimble

Unification of forces

What if all of nature’s forces can be woven together into one comprehensive force?