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تسجيل مستخدم جديدCalculation of $Ktopipi$ decay amplitudes from $Ktopi$ matrix elements in quenched domain-wall QCD
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We present a calculation of the $Ktopipi$ decay amplitudes from the $Ktopi$ matrix elements using leading order relations derived in chiral perturbation theory. Numerical simulations are carried out in quenched QCD with the domain-wall fermion action and the renormalization group improved gluon action. Our results show that the I=2 amplitude is reasonably consistent with experiment whereas the I=0 amplitude is sizably smaller. Consequently the $Delta I=1/2$ enhancement is only half of the experimental value, and $epsilon/epsilon$ is negative.
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We explore application of the domain wall fermion formalism of lattice QCD to calculate the $Ktopipi$ decay amplitudes in terms of the $Ktopi$ and $Kto 0$ hadronic matrix elements through relations derived in chiral perturbation theory. Numerical sim
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