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., Martinelli, G., Frezzotti, R., Rossi, G., Vladikas, A., Gimenez, V., et al. (2010). K^0-\bar{K^0 Mixing Beyond the SM from Nf=2 tmQCD}, 302-309.

K^0-\bar{K^0 Mixing Beyond the SM from Nf=2 tmQCD}

FREZZOTTI, ROBERTO;ROSSI, GIANCARLO;
2010-01-01

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.
2010
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
Con Impact Factor ISI
Kaon oscillations
arXiv:1012.3355 [hep-lat]
http://inspirehep.net/record/881441?ln=en
Dimopoulos, P., Martinelli, G., Frezzotti, R., Rossi, G., Vladikas, A., Gimenez, V., et al. (2010). K^0-\bar{K^0 Mixing Beyond the SM from Nf=2 tmQCD}, 302-309.
Dimopoulos, P; Martinelli, G; Frezzotti, R; Rossi, G; Vladikas, A; Gimenez, V; Lubicz, V; Simula, S; Mescia, F; Papinutto, M
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/30407
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