Results on the disconnected contributions for hadron structure

Abstract

We present results on the disconnected contributions to three point functions entering in studies of hadron structure. We use $N_F=2+1+1$ twisted mass fermions and give a detailed description on the results of the nucleon σ-terms, isoscalar axial charge and first moments of bare parton distributions for a range of pions masses. In addition we give the σ-terms and the computations are performed using QUDA code implemented on GPUs.

7 pages, 15 figures. Proceedings of the Lattice 2014 conference. v2 fixes captions of figures 1 and 2

References in corpus (2)

• SU(2) and SU(3) chiral perturbation theory analyses on baryon masses in 2+1 flavor lattice QCD
• Neutral mesons and disconnected diagrams in Twisted Mass QCD