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Status of ETMC simulations with Nf=2+1+1 twisted mass fermions

Baron, R; Boucaud, P; Deuzeman, A; Drach, V; Farchioni, F; Gimenez, V; Herdoiza, G; Jansen, K; Montvay, I; Palao, D; Pallante, E; Pène, O; Reker, S; Scholz, EE; Urbach, C; Wagner, M; Wenger, U (2008-10-21)

We present the status of runs performed in the twisted mass formalism with $N_{\rm f}=2+1+1$ flavours of dynamical fermions: a degenerate light doublet and a mass split heavy doublet. The procedure for tuning to maximal ...

Light baryon masses with dynamical twisted mass fermions

Alexandrou, C; Baron, R; Blossier, B; Brinet, M; Carbonell, J; Dimopoulos, P; Drach, V; Farchioni, F; Frezzotti, R; Guichon, P; Herdoiza, G; Jansen, K; Korzec, T; Koutsou, G; Liu, Z; Michael, C; Pène, O; Shindler, A; Urbach, C; Wenger, U (2008-03-21)

We present results on the mass of the nucleon and the Delta using two dynamical degenerate twisted mass quarks and the tree-level Symanzik improved gauge action. The evaluation is performed at four quark masses corresponding ...