We present the ETMC results for the bag parameters describing the neutral kaon mixing in the Standard Model and beyond and preliminary results for the bag parameters controlling the short distance contributions in the D0−Dbar0 oscillations. We also present preliminary results for the BBd, BBs, BBs/BBd and ξ parameter controlling B0d/s −Bbar0d/s oscillations in the Standard Model employing the so-called ratio method. Using Nf = 2 maximally twisted sea quarks and OsterwalderSeiler valence quarks we achieve both O(a)-improvement and continuum like renormalization pattern. Simulations are performed at three-values of the lattice spacing and several values of quark masses in the light, strange, charm region and above charm up to ∼ 2.5mc. Our results are extrapolated to the continuum limit and extrapolated/interpolated to the physical quark masses.
Neutral meson oscillations in the Standard Model and beyond from Nf=2 Twisted Mass Lattice QCD / N., Carrasco; V., Gimenez; P., Dimopoulos; R., Frezzotti; D., Palao; G. C., Rossi; G., Herdoiza; V., Lubicz; C., Tarantino; Martinelli, Guido; Papinutto, MAURO LUCIO; F., Sanfilippo; A., Shindler; S., Simula. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - LATTICE2012:(2012). (Intervento presentato al convegno 30th International Symposium on Lattice Field Theory (Lattice 2012) tenutosi a Cairns, Australia) [10.22323/1.164.0105].
Neutral meson oscillations in the Standard Model and beyond from Nf=2 Twisted Mass Lattice QCD
MARTINELLI, Guido;PAPINUTTO, MAURO LUCIO;
2012
Abstract
We present the ETMC results for the bag parameters describing the neutral kaon mixing in the Standard Model and beyond and preliminary results for the bag parameters controlling the short distance contributions in the D0−Dbar0 oscillations. We also present preliminary results for the BBd, BBs, BBs/BBd and ξ parameter controlling B0d/s −Bbar0d/s oscillations in the Standard Model employing the so-called ratio method. Using Nf = 2 maximally twisted sea quarks and OsterwalderSeiler valence quarks we achieve both O(a)-improvement and continuum like renormalization pattern. Simulations are performed at three-values of the lattice spacing and several values of quark masses in the light, strange, charm region and above charm up to ∼ 2.5mc. Our results are extrapolated to the continuum limit and extrapolated/interpolated to the physical quark masses.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
