Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays

Details Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays Strong Isospin Breaking in CP-even and CP-odd K -> pi pi Decays

2000-07-06

arxiv.org/abs/hep-ph/0007061v1

AIP Conf.Proc. 549 (2002) 287-290

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages. Contribution to the proceedings of the 7th Conference on the Intersections of Particle and Nuclear Physics (CIPANP),

Scientific paper

10.1063/1.1345258

Complete next-to-leading (chiral) order (NLO) expressions for the strong isospin-breaking (IB) contributions in K -> pi pi are used to discuss (1) for CP-even, the impact on the magnitude of the Delta I=1/2 Rule, and (2) for CP-odd, the strong IB correction, Omega_st, for the gluonic penguin contribution to epsilon'/epsilon, with particular emphasis on the strong low-energy constant (LEC) and loop contributions, numerical values for which are model-independent at NLO.

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