The CMS and ATLAS experiments at CERN’s Large Hadron Collider have observed an unforeseen feature in the behaviour of top ...

Once the most popular framework for physics beyond the Standard Model, supersymmetry is facing a reckoning—but many researchers are not giving up on it yet.

The fundamental particle of light is both ordinary and full of surprises. What physicists refer to as photons, other people might just call light. As quanta of light, photons are the smallest possible ...

Neutrinos don’t seem to get their mass in the same way as other particles in the Standard Model. In 1998, researchers made a discovery that challenged their understanding of particle physics and ...

Yesterday, at the annual Rencontres de Moriond conference taking place in La Thuile, Italy, the LHCb collaboration at CERN reported a new milestone in our understanding of the subtle yet profound ...

The stuff of daily existence is made of atoms, and all those atoms are made of the same three things: electrons, protons and neutrons. Protons and neutrons are very similar particles in most respects.

Neutrinos are notoriously aloof, but it’s not entirely their fault. Neutrinos are some of the most abundant particles in the universe, and they are everywhere. Every second, more than 6 trillion ...

Our universe should be a formless fog of energy. Why isn’t it? According to the known laws of physics, the universe we see today should be dark, empty and quiet. There should be no stars, no planets, ...

One of the great puzzles for scientists is why there is more matter than antimatter in the universe—the reason we exist. It turns out that the answer to this question is deeply connected to the ...

In a recent study, ALICE scientists measured the way that lead ions colliding in the LHC sometimes transform into gold and other new nuclei.

Our best model of particle physics explains only about 5 percent of the universe. The Standard Model is a thing of beauty. It is the most rigorous theory of particle physics, incredibly precise and ...