K \to ππdecay amplitudes from the lattice

Details K \to ππdecay amplitudes from the lattice K \to ππdecay amplitudes from the lattice

2002-10-03

arxiv.org/abs/hep-lat/0210003v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, Lattice 2002(WME)

Scientific paper

10.1016/S0920-5632(03)01553-6

In order to directly compute physical two-pion K-decay amplitudes using
lattice methods we must prepare a two-pion state with non-zero relative
momentum. Building upon a proposal of Lellouch and L\"uscher, we describe a
finite-volume method to realize such a state as the lowest energy state of two
pions.

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