Particle seen switching between matter and antimatter at CERN

Re:Particle seen switching between matter and antimatter at ... by dukwon on Saturday June 12, 2021 @05:12PM (#27487468)

Δm is directly proportional to the frequency of the oscillation. (In natural units it is exactly the angular frequency: cos(Δm·t) appears in the decay rate) So indeed Δm=0 means no oscillation. You measure it by essentially counting the number of particle and antiparticle decays as a function of decay-time.

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Re:Particle seen switching between matter and antimatter at ... by lamontcg on Saturday June 12, 2021 @05:38PM (#27487630)

What about charged systems like proton-antiproton? We expect there to be some similarly tiny Δm there, but obviously you can't have FCNC because its no longer neutral?

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Re:Particle seen switching between matter and antimatter at ... by dukwon on Saturday June 12, 2021 @05:42PM (#27487654)

Protons and antiprotons must have the same mass under CPT symmetry

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