The proton magnetic moment in nuclear magnetons is measured to be μ p/μ Ng/2=2.792846±0.000007, a 2.5 parts per million uncertainty. The direct determination, using a single proton in a Penning trap, demonstrates the first method that should work as well with an antiproton (p̄) as with a proton (p). This opens the way to measuring the p̄ magnetic moment (whose uncertainty has essentially not been reduced for 20 years) at least 103 times more precisely.
ASJC Scopus subject areas
- Physics and Astronomy(all)