On the direct CP violation parameter epsilon prime

Abstract

We review different definitions of the ${\epsilon }^{\prime }$ 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.

9 pages, 1 figure

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• Features of Moyal Trajectories
• Coherent States Expectation Values as Semiclassical Trajectories
• Enhancement of field renormalization in scalar theories via functional renormalization group
• A compared analysis of the susceptibility in the O(N) theory
• The expectation value of the field operator