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An Antimatter Experiment Shows Surprises Near Absolute Zero
An experiment conducted on hybrid matter-antimatter atoms has defied researchers’ expectations.
Is the Great Neutrino Puzzle Pointing to Multiple Missing Particles?
Years of conflicting neutrino measurements have led physicists to propose a “dark sector” of invisible particles — one that could simultaneously explain dark matter, the puzzling expansion of the universe, and other mysteries.
Decades-Long Quest Reveals Details of the Proton’s Inner Antimatter
Twenty years ago, physicists set out to investigate a mysterious asymmetry in the proton’s interior. Their results, published today, show how antimatter helps stabilize every atom’s core.
Neutrino Asymmetry Passes Critical Threshold
The first official evidence of a key imbalance between neutrinos and antineutrinos provides one of the best clues for why the universe contains something rather than nothing.
Neutrinos Hint of Matter-Antimatter Rift
A hint that neutrinos behave differently than antineutrinos suggests an answer to one the biggest questions in physics.
Search Escalates for Key to Why Matter Exists
Physicists have completed a new round of searches for the answer to why matter dominates over antimatter. But the radioactive decay that would solve the puzzle is evading them.