Lattice calculation of matrix elements relevant for Delta I=1/2 rule and epsilon-prime

We have gained enough statistical precision to distinguish signal from noise in matrix elements of all operators relevant for the Delta I=1/2 rule in kaon decays and for the direct CP violation parameter epsilon-prime. We confirm significant enhancement of Delta I=1/2 transitions observed in experim...

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Bibliographic Details
Published in:arXiv.org 1999-03
Main Authors: Pekurovsky, D, Kilcup, G
Format: Article
Language:English
Subjects:
CP violation
Dependence
Lattice matching
Operators
Parameter estimation
Online Access:Get full text
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Summary:We have gained enough statistical precision to distinguish signal from noise in matrix elements of all operators relevant for the Delta I=1/2 rule in kaon decays and for the direct CP violation parameter epsilon-prime. We confirm significant enhancement of Delta I=1/2 transitions observed in experiments, although a few large systematic uncertainties remain in our predictions: higher-order chiral corrections and lattice spacing dependence. The estimate of epsilon-prime parameter is further complicated by the problem of matching lattice and continuum operators.
ISSN:2331-8422