出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present a calculation of the low energy constants describing the real and imaginary parts of the
K !pp decay amplitudes A0 and A2. Leading and next leading order chiral perturbation theory
is used and its applicability assessed. A combination of statistical and systematic errors limits the
precision of the results. The apparent limitations of chiral perturbation theory raise doubts about
the accuracy of a possible extrapolation to physical K !pp kinematics.
