Speaker
Description
For CPT symmetry to be conserved, the energy spectrum of both matter and antimatter atoms should be identical. The ALPHA collaboration uses antihydrogen, the antimatter counterpart of hydrogen, to perform CPT symmetry tests.
Microwave spectroscopy techniques were applied in the ALPHA experiment to observe, for the first time, the transition between hyperfine energy levels of antihydrogen. It is known as the positron spin resonant (PSR) transition and is induced by flipping the spin of the positron.
However, the transition produced by flipping the spin of the antiproton, known as nuclear magnetic resonant (NMR) transition, has only been measured in hydrogen, not on antihydrogen.
I will present the recent progress made to improve the PSR measurement and to enable a precise measurement of the NMR transition.
