%0 Journal Article
%T Results on the disconnected contributions for hadron structure
%A Constantia Alexandrou
%A Martha Constantinou
%A Vincent Drach
%A Kyriakos Hadjiyiannakou
%A Karl Jansen
%A Giannis Koutsou
%A Alejandro Vaquero
%J Physics
%D 2014
%I arXiv
%X 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 {\sigma}-terms, isoscalar axial charge and first moments of bare parton distributions for a range of pions masses. In addition we give the {\sigma}-terms and the computations are performed using QUDA code implemented on GPUs.
%U http://arxiv.org/abs/1410.8761v2