Investigation of two-particle contributions to nucleon matrix elements

Constantia Alexandrou; Giannis Koutsou; Yan Li; Marcus Petschlies; Ferenc Pittler

Investigation of two-particle contributions to nucleon matrix elements

High Energy Physics - Lattice 2024-01-02 v2

Authors: Constantia Alexandrou , Giannis Koutsou , Yan Li , Marcus Petschlies , Ferenc Pittler

Abstract

We investigate contributions of excited states to nucleon matrix elements by studying the two- and three-point functions using nucleon and pion-nucleon interpolating fields. This study is carried out using twisted mass fermion ensembles with pion masses 346 MeV and 131 MeV. We compare the results obtained using these two ensembles and show preliminary results for nucleon charges.

Keywords

nucleon matrix elements two-particle contributions excited states twisted mass fermions pion mass nucleon charges

Cite

@article{arxiv.2312.15737,
  title  = {Investigation of two-particle contributions to nucleon matrix elements},
  author = {Constantia Alexandrou and Giannis Koutsou and Yan Li and Marcus Petschlies and Ferenc Pittler},
  journal= {arXiv preprint arXiv:2312.15737},
  year   = {2024}
}

Comments

8 pages, 3 figures, 40th International Symposium on Lattice Field Theory - Lattice2023

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