Speaker
Description
The ALPHA experiment has conducted the highest precision measurements on antihydrogen to date in order to test matter / antimatter symmetries. Our recent demonstration of laser cooling antihydrogen represented not only a novel spectroscopic survey in the antiatom, but also an important technical milestone in improving our comparisons against hydrogen [1]. A cooled population of antihydrogen atoms offers a new avenue in pursuit of antihydrogen spectroscopy competitive with the best measurements in hydrogen, and will be critical to performing precision gravity measurements [2]. We present a summary of spectroscopy measurements in ALPHA to date, and discuss our developments and prospects for future measurements of the antihydrogen spectrum, as well as our efforts towards performing the first gravitation measurements on antimatter with ALPHA-g.
[1] Baker, C.J., et al. Laser cooling of antihydrogen atoms. Nature 592, 35–42 (2021)
[2] Bertsche W. A. Prospects for comparison of matter and antimatter gravitation with ALPHA-g. Phil. Trans. R. Soc. A. 37620170265 (2018)
