Hyperfine structure of anti-hydrogen at ALPHA

Jun 9, 2025, 10:30 AM
30m
Plenary presentation Precision Physics at High Intensities Plenary

Speaker

Simone Stracka (INFN Sezione di Pisa)

Description

The ALPHA experiment at CERN’s Antiproton Decelerator is devoted to the study of the spectroscopic properties and gravitational behavior of anti-hydrogen. The comparison of these properties with those of hydrogen, which are known to great precision, may constitute a test of CPT, Lorentz Invariance, and the Weak Equivalence Principle.

To produce and confine antihydrogen, ALPHA relies on intense magnetic fields, which represent a challenging environment for atomic spectroscopy. This notwithstanding, measurements of the ground state of antihydrogen with microwaves are approaching the regime at which they are sensitive to the internal structure of the antiproton. I will present the recent technical advancements, results and prospects in the studies of the hyperfine structure of antihydrogen with the ALPHA experiment, and implications for the rest of ALPHA's physics program.

Primary author

Simone Stracka (INFN Sezione di Pisa)

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