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  • 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 ...
  • Sigma terms and strangeness content of the nucleon with $N_f=2+1+1$ twisted mass fermions 

    Dinter, S; Drach, V; Frezzotti, R; Herdoiza, G; Jansen, K; Rossi, G (2012-02-07)
    We study the nucleon matrix elements of the quark scalar-density operator using maximally twisted mass fermions with dynamical light ($u$,$d$), strange and charm degrees of freedom. We demonstrate that in this setup the ...

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