New research suggests a particle inside an atom can lose mass, offering a fresh look at how matter works at the smallest ...

Quantum physics once shocked scientists by revealing that particles can behave like waves—and now, that strange behavior has ...

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 ...

For years, one tiny mismatch in particle physics carried outsized hopes. The muon, a heavier and short-lived cousin of the ...

A new analysis reveals what happens when very short or narrow electron beams encounter a particle. The research is published in the New Journal of Physics. Scientists should be able to achieve a new ...

Scientists have made the first experimental observation of matter wave diffraction in a short-lived electron-positron atom.

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Using high-intensity lasers, researchers have taken an important step toward miniaturization of particle accelerators by demonstrating free-electron laser amplification at extreme ultraviolet ...