Physical matrix elements for Delta I = 3/2 channel K to pi pi decays
Abstract
K to pi pi matrix elements of the electroweak operator Q(27,1)Delta I=3/2 are calculated on the RBC/UKQCD 323 x 64, Ls=16 lattices, using 2+1 dynamical flavors and domain wall fermions, with an inverse lattice spacing of a(-1)=2.42(4) GeV. Data is interpolated or extrapolated to energy conserving kinematics and a preliminary calculation of the experimental parameter |A2| is performed.
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