학술논문
The K → ππ Electroweak Penguin Matrix Elements in the Chiral Limit.
Document Type
Article
Author
Source
Subject
*PARTICLES (Nuclear physics)
*SYMMETRY (Physics)
*NUCLEAR reactions
*MATRICES (Mathematics)
*NUCLEAR physics
*PHYSICS
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Language
ISSN
0094-243X
Abstract
We present a model-independent determination of the SU(3)F chiral limit values of the K→ππ matrix elements of the electroweak penguin operators Q7,8 in the Standard Model. This determination is accomplished using a combination of dispersive and finite energy sum rule techniques, with hadronic τ decay data as input. The consistency between independent determinations is shown to be excellent. Implications for the value of ε′/ε in the Standard Model are also discussed. [ABSTRACT FROM AUTHOR]