By employing a twisted mass term, we compare recent results from lattice calculations of N-f = 2 dynamical Wilson fermions with Wilson Chiral Perturbation Theory (WChPT). The final goal is to determine some combinations of Gasser-Leutwyler Low Energy Constants (LECs). A wide set of data with different lattice spacings (a similar to 0.2 - 0.12 fm), different gauge actions (Wilson plaquette, DBW2) and different quark masses (down to the lowest pion mass allowed by lattice artifacts and including negative quark masses) provide a strong check of the applicability of WChPT in this regime and the scaling behaviours in the continuum limit.
N(f)=2 Lattice QCD and Chiral Perturbation Theory / L., Scorzato; F., Farchioni; P., Hofmann; K., Jansen; I., Montvay; G., Münster; Papinutto, MAURO LUCIO; E., Scholz; A., Shindler; N., Ukita; C., Urbach; U., Wenger; I., Wetzorke. - In: NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS. - ISSN 0920-5632. - 153:(2006), pp. 283-290. (Intervento presentato al convegno Workshop on Computational Hadron Physics (Hadron Physics 13) tenutosi a Nicosia) [10.1016/j.nuclphysbps.2006.01.035].
N(f)=2 Lattice QCD and Chiral Perturbation Theory
PAPINUTTO, MAURO LUCIO;
2006
Abstract
By employing a twisted mass term, we compare recent results from lattice calculations of N-f = 2 dynamical Wilson fermions with Wilson Chiral Perturbation Theory (WChPT). The final goal is to determine some combinations of Gasser-Leutwyler Low Energy Constants (LECs). A wide set of data with different lattice spacings (a similar to 0.2 - 0.12 fm), different gauge actions (Wilson plaquette, DBW2) and different quark masses (down to the lowest pion mass allowed by lattice artifacts and including negative quark masses) provide a strong check of the applicability of WChPT in this regime and the scaling behaviours in the continuum limit.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
