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

Bel'kov, A. A.; Bohm, G.; Lanyov, A. V.; Moshkin, A. A.

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

Authors

Description

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