Antihelium-4 Mass (IMAGE)

DOE/Brookhaven National Laboratory

Antihelium-4 Mass

Caption

This graph plots particle counts by mass, showing ordinary helium nuclei (He-3 and He-4) in orange, and their antimatter counterparts (antihelium-3 and antihelium-4) in blue. The plot illustrates that the newly discovered antimatter nuclei, antihelium-4, are very cleanly separated from the lighter isotopes, and are at the correct mass.

Credit

Brookhaven National Laboratory

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