I Beta decay and CPT symmetry

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1. Jun 19, 2016

entropy1

I read that CP-symmetry violation occurs (or can occur) in beta decay. Does that mean that, since CPT-symmetry must hold, there is no T-symmetry?

2. Jun 19, 2016

Paul Colby

yes, within LQFT which appears to be our most complete theory.

3. Jun 20, 2016

vanhees71

One should note that the violation of P, CP, and T symmetry are all shown directly by observation, most recently the T violation in B decays by the BABAR collaboration. I'm to lazy to google for it. The usual kind of relativistic QT, i.e., local relativistic QFT with a stable ground state, predicts CPT invariance, which so far has not been observerd to be violated.

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