We present preliminary results on the of neutral kaon oscillations in extensions of the Standard Model. Using Nf=2 maximally twisted sea quarks and Osterwalder-Seiler valence quarks, we achieve both O(a)-improvement and continuum-like renormalization pattern for the relevant four-fermion operators. We perform simulations at three values of the lattice spacing and extrapolate/interpolate our results to the continuum limit and physical light/strange quark mass. The calculation of the renormalization constants of the complete operator basis is performed non- perturbatively in the RI-MOM scheme.
Dimopoulos, P., Frezzotti, R., Gimenez, V., Lubicz, V., Martinelli, G., Mescia, F., et al. (2010). K0-antiK0 Mixing Beyond the SM from Nf=2 tmQCD. ??????? it.cilea.surplus.oa.citation.tipologie.CitationProceedings.prensentedAt ??????? 28th International Symposium on Lattice Field Theory (Lattice 2010), Villasimius, Sardinia, Italy, 14-19 Jun 2010, Villasimius (CA) - Italia [10.22323/1.105.0302].
K0-antiK0 Mixing Beyond the SM from Nf=2 tmQCD
FREZZOTTI, ROBERTO;ROSSI, GIANCARLO;
2010-12-15
Abstract
We present preliminary results on the of neutral kaon oscillations in extensions of the Standard Model. Using Nf=2 maximally twisted sea quarks and Osterwalder-Seiler valence quarks, we achieve both O(a)-improvement and continuum-like renormalization pattern for the relevant four-fermion operators. We perform simulations at three values of the lattice spacing and extrapolate/interpolate our results to the continuum limit and physical light/strange quark mass. The calculation of the renormalization constants of the complete operator basis is performed non- perturbatively in the RI-MOM scheme.| File | Dimensione | Formato | |
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