Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1997-01-13
Nucl.Phys.Proc.Suppl. 59 (1997) 149-156
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 3 EPS figures, uses epsfig.sty. Invited talk to the 4th KEK Topical Conference on "Flavor Physics", KEK, Japan, 29-3
Scientific paper
10.1016/S0920-5632(97)00437-4
Three years after the completion of the next-to-leading order calculation, the status of the theoretical estimates of $\epsilon'/\epsilon$ is reviewed. In spite of the theoretical progress, the prediction of $\epsilon'/\epsilon$ is still affected by a 100% theoretical error. In this paper the different sources of uncertainty are critically analysed and an updated estimate of $\epsilon'/\epsilon$ is presented. Some theoretical implications of a value of $\epsilon'/\epsilon$ definitely larger than $10^{-3}$ are also discussed.
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