Theoretical strategies for epsilon'/epsilon

Details Theoretical strategies for epsilon'/epsilon Theoretical strategies for epsilon'/epsilon

2009-12-15

arxiv.org/abs/0912.2917v1

PoS KAON2009:027,2009

Physics

High Energy Physics

High Energy Physics - Lattice

Presented at 2009 KAON International Conference (KAON09), June 09-12, 2009 in Tsukuba, Japan. 9 pages, 8 figures

Scientific paper

We review the current status of calculations of the two pion decays of the kaon using the first-principles methods of lattice gauge theory and the significant challenges that these calculations pose. While a calculation with controlled errors at even the 10-20% level has not yet been performed, present results suggest that such a calculation of the real and imaginary parts of the Delta I = 3/2 amplitude should be accomplished within the next two years. The more difficult Delta I = 1/2 amplitude may also be now within reach.

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