Claims

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As of snapshot 27745 under ledger-default@0.3.0.

Claim	Type	Assessment	Score	Review checks	References
At the reported precision, the antihydrogen hyperfine measurement was sensitive to antiproton internal structure contributing about 40 ppm.	QUANTITATIVE	Supported	0.9781	1 of 4	115
Using microwave spectroscopy of roughly 24,000 anti-atoms, the study determined antihydrogen a1S/h as 1,420,404.8 ± 1.1(stat.) ± 5.6(sys.) kHz in a 1-T field.	QUANTITATIVE	Supported	0.9781	1 of 4	122
The study reported a 4-ppm measurement of antihydrogen’s ground-state hyperfine splitting, improving the prior state-of-the-art precision by two orders of magnitude.	QUANTITATIVE	Supported	0.9121	1 of 4	122