Particle Physics

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tetraneutrons

NO PROTONS ALLOWED  The collision of two varieties of helium nuclei at a Japanese lab produced beryllium nuclei and tetraneutrons, nuclei with four neutrons but no protons. This illustration depicts the number of protons and neutrons but not their actual positions within each nucleus.

entanglement experiment

Physicists in the Netherlands performed quantum entanglement experiments using electrons in diamonds located at labs (left and right of aerial photo) far enough apart to confirm that no hidden signal could be influencing the results.

quarks and gluons

INGREDIENTS  Brookhaven National Laboratory’s Relativistic Heavy Ion Collider slams protons and neutrons together, breaking the subatomic particles into a soup of their core ingredients — quarks and particles called gluons (illustrated)

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