Results on K --> 2pi decays at O(p^6) and epsilon'/epsilon from an effective chiral lagrangian approach

Details Results on K --> 2pi decays at O(p^6) and epsilon'/epsilon from an effective chiral lagrangian approach Results on K --> 2pi decays at O(p^6) and epsilon'/epsilon from an effective chiral lagrangian approach

1997-04-18

arxiv.org/abs/hep-ph/9704354v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, LaTeX, 2 figures, uses epsf.sty

Scientific paper

We have combined a new systematic calculation of mesonic matrix elements at O(p^6) from an effective chiral lagrangian approach using Wilson coefficients taken from [G.Buchalla, A.J.Buras, M.E.Lautenbacher, Rev.Mod.Phys. 68 (1996) 1125], derived in the framework of perturbative QCD, and restricted partly by experimental data. We derive complete expressions for K --> 2pi amplitudes and give new estimates for epsilon'/epsilon.

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