Results on the disconnected contributions for hadron structure

Constantia Alexandrou; Martha Constantinou; Vincent Drach; Kyriakos Hadjiyiannakou; Karl Jansen; Giannis Koutsou; Alejandro Vaquero

Results on the disconnected contributions for hadron structure

High Energy Physics - Lattice 2014-12-22 v2

Authors: Constantia Alexandrou , Martha Constantinou , Vincent Drach , Kyriakos Hadjiyiannakou , Karl Jansen , Giannis Koutsou , Alejandro Vaquero

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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 {\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.

Keywords

hadron physics

Cite

@article{arxiv.1410.8761,
  title  = {Results on the disconnected contributions for hadron structure},
  author = {Constantia Alexandrou and Martha Constantinou and Vincent Drach and Kyriakos Hadjiyiannakou and Karl Jansen and Giannis Koutsou and Alejandro Vaquero},
  journal= {arXiv preprint arXiv:1410.8761},
  year   = {2014}
}

Comments

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

Results on the disconnected contributions for hadron structure

Abstract

Keywords

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