We present work in progress on the computation of the K-meson vector and tensor decay constants, as well as the B-parameter in Kaon oscillations. Our simulations are performed in a partially quenched setup, with two dynamical (sea) Wilson quark flavours, having a maximally twisted mass term. Valence quarks are either of the standard or the Osterwalder-Seiler maximally twisted variety. These two regularizations can be suitably combined in order to obtain a BK parameter which is both multiplicatively renormalizable and O(a) improved.
Dimopoulos, P., Frezzotti, R., Rossi, G., Gimenez, V., Lubicz, V., Mescia, F., et al. (2008). K-meson vector and tensor decay constants and B(K)-parameter from N(f) = 2 tmQCD. In Proceedings of 26th International Symposium on Lattice field theory (Lattice 2008) (pp.271-278). Trieste : SISSA.
K-meson vector and tensor decay constants and B(K)-parameter from N(f) = 2 tmQCD
FREZZOTTI, ROBERTO;ROSSI, GIANCARLO;
2008-01-01
Abstract
We present work in progress on the computation of the K-meson vector and tensor decay constants, as well as the B-parameter in Kaon oscillations. Our simulations are performed in a partially quenched setup, with two dynamical (sea) Wilson quark flavours, having a maximally twisted mass term. Valence quarks are either of the standard or the Osterwalder-Seiler maximally twisted variety. These two regularizations can be suitably combined in order to obtain a BK parameter which is both multiplicatively renormalizable and O(a) improved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
