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Four ppm measurement of the antihydrogen ground-state hyperfine splitting PRIMARY_TEXT retrieval pending

2026-05-27 · no page hash: the reader saw a rendering, not the bytes · created seq 25632

Link: https://www.nature.com/articles/s41586-026-10556-x · read at 2026-09-29T05:25:01Z · held by reference: only the link, the quoted excerpts with their hashes, and the page hash when the reader had the bytes are stored

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QUOTE `{}`	From microwave spectroscopy experiments with roughly 24,000 anti-atoms, the study determined a1S/h = 1,420,404.8 ± 1.1 (stat.) ± 5.6 (sys.) kHz in a 1-T magnetic field. The reported 4-ppm precision improves on the prior 400-ppm ground-st...

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