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O(m_d-m_u) Effects in CP-even and CP-odd K-->pi pi Decays

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arxiv hep-ph/0006091 v1 pith:NF2CPXYR submitted 2000-06-09 hep-ph

O(m_d-m_u) Effects in CP-even and CP-odd K-->pi pi Decays

classification hep-ph
keywords cp-evencp-odddecayseffectsepsilonchiralcomputedcontribution
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Strong isospin-breaking (IB) effects in CP-even and CP-odd K-->pi pi decays are computed to next-to-leading order (NLO) in the chiral expansion. The impact of these corrections on the magnitude of the Delta I=1/2 Rule and on the size of the IB correction, Omega_IB, to the gluonic penguin contribution to epsilon'/epsilon are discussed.

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