2001/01/19 by Stefano Bertolini, Bertolini, Stefano
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0101212
18 pages, Invited talk at the RADCOR 2000 Symposium, Carmel CA, USA, 11-15 Sept 2000
arxiv created 2001/01/19 · arxiv updated 2009/11/30
I shortly review the present status of the theoretical estimates of eps'/eps. I consider a few aspects of the theoretical calculations which may be relevant in understanding the present experimental results. I discuss the role of higher order chiral corrections and in general of non-factorizable contributions for the explanation of the Delta I = 1/2 selection rule in kaon decays and eps'/eps. Lacking reliable lattice calculations, the 1/N expansion and phenomenological approaches may help in understanding correlations among theoretical effects and the experimental data. The same dynamics which underlies the CP conserving selection rule appears to drive eps'/eps in the range of the recent experimental measurements.