Antiprotons Cooled to 4 K and Weighed in a Penning Trap
JUL 01, 1990
DOI: 10.1063/1.2810619
Any Lorentz‐invariant local field theory must obey the CPT theorem. That is to say, the theory must be invariant under the combined operations of charge conjugation, parity inversion and time reversal, even though we know that these symmetries, taken one at a time, can be violated in elementary‐particle processes. It follows that particles and their antiparticles must have identical masses and equal magnetic moments (of opposite sign).
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© 1990 American Institute of Physics
