Seminar über aktuelle Frage der theoretischen Kernphysik

22.11.11 16:15

Sigma terms and the strangeness content of the nucleon with Nf=2+1+1 lattice QCD

Vincent Drach (DESY)

We investigate scalar matrix elements of the nucleon using Nf=2+1+1 flavors of maximally twisted mass fermions.  We compute disconnected contributions to the relevant three-point functions using an efficient noise reduction technique.  Using these methods together with an only multiplicative renormalization applicable for twisted mass fermions, allows us to obtain accurate results in the light and strange sector.  We provide a preliminary estimation of the strangeness content of the nucleon.


(Seminarraum II)

Kategorie: Kernphysik