Weak Matrix Elements of Beyond the Standard Model $\Delta s=2$ four-quark operators from nf=2+1 Domain-Wall fermions

We report on our computation of the hadronic matrix elements of the four-quark operators needed for the study of $K^{0} - {\overset{ˉ}{K}}^{0}$ mixing beyond the Standard Model (SM). We consider nf=2+1 Domain-Wall fermions on Iwasaki gauge action with lightest unitary pion of 290 MeV and a single lattice spacing a=0.086 fm. The renormalization is performed non-perturbatively through the RI-MOM scheme and our results are converted perturbatively to MSbar. We have estimated the various systematic errors. Our results confirm a previous quenched study, where large ratios of non-SM to SM matrix elements were obtained.

Weak Matrix Elements of Beyond the Standard Model $Δ s = 2$ four-quark operators from nf=2+1 Domain-Wall fermions

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Weak Matrix Elements of Beyond the Standard Model $Δ s = 2$ four-quark operators from nf=2+1 Domain-Wall fermions

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Weak Matrix Elements of Beyond the Standard Model Δs=2Δs=2 four-quark operators from nf=2+1 Domain-Wall fermions

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Weak Matrix Elements of Beyond the Standard Model Δs=2Δs=2 four-quark operators from nf=2+1 Domain-Wall fermions

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Weak Matrix Elements of Beyond the Standard Model $Δ s = 2$ four-quark operators from nf=2+1 Domain-Wall fermions

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Weak Matrix Elements of Beyond the Standard Model $Δ s = 2$ four-quark operators from nf=2+1 Domain-Wall fermions

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