On the direct CP-violation parameter
Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
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We review different definitions of the parameter describing direct CP-violation in neutral kaon decays, which was precisely measured in recent experiments, and point out the inconsistency of some of them due to a CPT-constraint. The proper comparison of the experimental results to the theoretical computations is discussed.
© Springer-Verlag, 2004