We present the first Nf=2+1+1 results for the matrix elements of the operators describing neutral K and D mixing in the Standard Model and its extensions. The combination of maximally twisted sea quarks and Osterwalder-Seiler valence quarks ensures O(a)-improvement and continuum like renormalization pattern. We have used the Nf=2+1+1 dynamical quark gauge configurations generated by ETMC. Simulations include three lattice spacings in the interval [0.06:0.09] fm and pseudoscalar meson masses in the range [230:500] MeV. Our results are extrapolated to the continuum limit and to the physical quark masses. The calculation of the renormalization constants has been performed non-perturbatively in the RI-MOM scheme.

Carrasco N, Dimopoulos P, Frezzotti R, Giménez V, Lubicz V, Rossi G C, et al. (2014). K and D oscillations in the Standard Model and its extensions from Nf=2+1+1 Twisted Mass LQCD. In PoS LATTICE 2013 (pp.393).

K and D oscillations in the Standard Model and its extensions from Nf=2+1+1 Twisted Mass LQCD

LUBICZ, Vittorio;TARANTINO, CECILIA
2014

Abstract

We present the first Nf=2+1+1 results for the matrix elements of the operators describing neutral K and D mixing in the Standard Model and its extensions. The combination of maximally twisted sea quarks and Osterwalder-Seiler valence quarks ensures O(a)-improvement and continuum like renormalization pattern. We have used the Nf=2+1+1 dynamical quark gauge configurations generated by ETMC. Simulations include three lattice spacings in the interval [0.06:0.09] fm and pseudoscalar meson masses in the range [230:500] MeV. Our results are extrapolated to the continuum limit and to the physical quark masses. The calculation of the renormalization constants has been performed non-perturbatively in the RI-MOM scheme.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/160989
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact