15.09.2026

New technological achievement – a cold muonium beam

15.9.2026

Muonium is an exotic atom formed by a positive muon and an electron. Congratulations to Anna Soter and the team for this great achievement – an intense, cold muonium beam that opens new opportunities to test fundamental physics.

This work was featured in an ETH Zurich news article: Novel particle beam could challenge Einstein’s theory of gravity | ETH Zurich

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Reference

Zhang J, Antognini A, Bartkowiak M, Goeldi D, Kirch K, Knecht A, Taqqu D, Waddy R, Wauters F, Wegmann P, Soter A: Generation of a high-intensity, superthermal muonium beam for gravity and laser spectroscopy experiments. Nature Physics, 14 September 2026, DOI: 10.1038/s41567-026-03433-x

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