Testing CPT symmetry with antiprotonic helium and antihydrogen

Collaboration
for the collaboration.
Apr 20, 2012
3 pages
Published in:
  • AIP Conf.Proc. 1441 (2012) 1, 546-548
Contribution to:
  • Published: Apr 20, 2012
Experiments:

Citations per year

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Abstract: (AIP)
The ASACUSA collaboration is performing precision laser and microwave spectroscopy of exotic atoms containing an antiproton at the Antiproton Decelerator (AD) of CERN, Geneva, Switzerland. The laser and microwave spectroscopy of antiprotonic helium, a three-body system containing an antiproton, a helium nucleus, and an electron, has - through comparison to state-of-the-art three-body QED calculations - yielded the most precise determination of the antiproton charge and mass. As a next major project, ASACUSA is pursuing a measurement of the ground-state hyperfine structure of antihydrogen, a quantity that is know for hydrogen to very high precision. These measurements constitute some of the best test of the fundamental CPT theory in the hadronic sector.
  • talk: Cambridge 2011/07/24
  • helium: nucleus
  • anti-p: charge
  • anti-p: mass
  • ground state: hyperfine structure
  • atom: exotic
  • antihydrogen
  • microwaves
  • ASACUSA
  • laser
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