No one has ever probed a particle more stringently than this. In a new experiment, scientists measured a magnetic property of the electron more carefully than ever before, making the most precise ...

A tiny discrepancy in particle physics has loomed for decades as an exciting possible crack in one of science’s most ...

A new study, published in the journal Physical Review Letters, suggests that some of the highest-energy cosmic rays could ...

Scientists have successfully developed a pocket-sized particle accelerator capable of projecting ultra-short electron beams with laser light at more than 99.99% of the speed of light. To achieve this ...

A new assessment of the electron is the most precise measurement of a particle ever taken, at a precision of 1.3 parts in 10 trillion, and could tell us about new physics happening at the smallest ...

A major obstacle in calculating the muon’s behavior is the strong force, the most powerful of the four fundamental forces, along with gravity, electromagnetism, and the weak force. It binds quarks ...

In 1932, Arthur Compton's experiments with cosmic rays revealed an unexpected particle. This particle, observed via a cloud ...

Muons are a key subatomic particle in the discovery of new physics, but after particle collision, they’re difficult to track.

There may be an ultraheavy explanation for the mystery surrounding the origins of the highest-energy particles ever observed.

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