PoS - Proceedings of Science
Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Hadron Structure
Disconnected diagrams with twisted-mass fermions
A. Abdel-Rehim, C. Alexandrou, M. Constantinou, J. Finkenrath, K. Hadjiyiannakou, K. Jansen, C. Kallidonis, G. Koutsou, A. Vaquero Avilés-Casco,* J. Volmer
*corresponding author
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Pre-published on: December 27, 2016
Published on: March 24, 2017
Abstract
The latest results from the Twisted-Mass collaboration on disconnected diagrams at the physical value of the pion mass are presented. In particular, we focus on the sigma terms, the axial charges and the momentum fraction, all of them for the nucleon. A detailed error analysis for each observable follows, showing the strengths and weaknesses of the one-end trick. Alternatives are discussed.
DOI: https://doi.org/10.22323/1.256.0155
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