On the direct CP-violation parameter
Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
* e-mail: email@example.com
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