Hyperfine Interactions
Volume 172, Numbers 1-3, 53-62, DOI: 10.1007/s10751-007-9525-4

Ground-state hyperfine splitting of antihydrogen

Ryugo S. Hayano

From the issue entitled "Proceedings of the 4th International Conference on Trapped Charged Particles and Fundamental Physics (TCP 2006), Parksville, Canada, 3-8 September, 2006, PART I/III"

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Abstract

ASACUSA collaboration at CERN’s antiproton decelerator (CERN AD) plans to measure the ground-state hyperfine splitting (GS-HFS) of antihydrogen (${\text{\ifmmode\expandafter\bar\else\expandafter\=\fi{H}}}${\text{\ifmmode\expandafter\bar\else\expandafter\=\fi{H}}}) to test the CPT symmetry to high precision. Our scheme is to produce an (anti-) atomic beam with a novel two-frequency superconducting Paul trap, and to use sextupole magnets and a 1.4-GHz cavity to analyze the HFS resonance frequency.

Keywords  CPT test - Antihydrogen - Paul trap

PACS  11.30.Er - 25.43.+t - 36.10.-k - 39.10.+j

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