ar X iv : h ep - l at / 0 20 91 08 v 1 1 1 Se p 20 02 1 K → ππ Decay Amplitude on the Lattice
نویسنده
چکیده
Recent theoretical and numerical progresses of the lattice calculations of K → ππ decay amplitude are reviewed.
منابع مشابه
ar X iv : h ep - p h / 02 09 28 9 v 1 2 4 Se p 20 02 DISPERSIVE TREATMENT OF K → ππ
We discuss a new method to treat the K → ππ amplitude dispersively, taking into full account the effects of final state interatcions. Our approach is based on a set of dispersion relations for the K → ππ amplitude, in which the weak Hamiltonian carries momentum. In these dispersion relations two subtraction constants have to be introduced, whereby one can be related via a soft pion theorem to t...
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متن کاملar X iv : h ep - l at / 9 71 10 12 v 1 7 N ov 1 99 7 1 K + → π + π 0 Decay Amplitude in Quenched Lattice QCD ∗
A new study is reported of a lattice QCD calculation of the K → ππ decay amplitude with the Wilson quark action in the quenched approximation at β = 6.1. The amplitude is extracted from the K → ππ Green function, and a conversion to the continuum value is made employing a recent one-loop calculation of chiral perturbation theory. The result is consistent with the experimental value if extrapola...
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تاریخ انتشار 2002