Speaker
PETROS DIMOPOULOS
(University of Rome 'La Sapienza')
Description
We present preliminary results on the of neutral kaon oscillations in extensions of the Standard Model. Using $N_f=2$ 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.
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Primary author
PETROS DIMOPOULOS
(University of Rome 'La Sapienza')
Co-authors
Prof.
ANASTASSIOS VLADIKAS
(INFN Sez. ROMA 2)
Dr
FEDERICO MESCIA
(University of Barcelona)
Prof.
GIANCARLO ROSSI
(University of Rome 'Tor Vergata')
Prof.
GUIDO MARTINELLI
(University of Rome 'La Sapienza')
Dr
MAURO PAPINUTTO
(Laboratoire de Physique Subatomique et de Cosmologie)
Dr
ROBERTO FREZZOTTI
(University of Rome 'Tor Vergata')
Prof.
SILVANO SIMULA
(INFN Sez. ROMA 3)
Prof.
VICENT GIMENEZ
(University of Valencia)
Prof.
VITTORIO LUBICZ
(University of Rome 'Roma Tre')
