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antimatter

Four spheres representing a nucleus surrounded by two additional spheres.
atomic physics

An Antimatter Experiment Shows Surprises Near Absolute Zero

By Charlie Wood
March 16, 2022
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An experiment conducted on hybrid matter-antimatter atoms has defied researchers’ expectations.

Illustration of labyrinth with a large sphere representing the neutrino at center. People with flashlights explore the paths.
particle physics

Is the Great Neutrino Puzzle Pointing to Multiple Missing Particles?

By Thomas Lewton
October 28, 2021
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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.

A video in which a proton seems to be composed of three particles, but on zooming in, it turns out to be a swirling miasma.
quantum physics

Decades-Long Quest Reveals Details of the Proton’s Inner Antimatter

By Natalie Wolchover
February 24, 2021
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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.

Abstractions blog

Neutrino Asymmetry Passes Critical Threshold

By Natalie Wolchover
April 15, 2020
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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.

As neutrinos change “flavors” they may illuminate the differences between matter and antimatter.
particle physics

Neutrinos Hint of Matter-Antimatter Rift

By Natalie Wolchover
July 28, 2016
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A hint that neutrinos behave differently than antineutrinos suggests an answer to one the biggest questions in physics.

Physics

Search Escalates for Key to Why Matter Exists

By Natalie Wolchover
October 15, 2013
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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.

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