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$ΔI = 3/2$ kaon weak matrix elements with non-zero total momentum

T. Yamazaki
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Abstract

We present preliminary results for the $ΔI = 3/2$ kaon decay matrix elements using domain wall fermions and the DBW2 gauge action at one coarse lattice spacing corresponding to $a^{-1} = 1.3$ GeV. We employ an extention of the Lellouch and Lüscher formula for non-zero total momentum to extract the infinite volume, center-of-mass system decay amplitudes. We compare the result of $\mathrm{Re}A_2$ with previous results calculated by several methods, and experiment. We also show the I=2 $ππ$ scattering phase shift.

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T. Yamazaki. 2005-09-26. $ΔI = 3/2$ kaon weak matrix elements with non-zero total momentum. https://arxiv.org/abs/hep-lat/0509135

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