Nucleon Excited States in N$_f$=2 lattice QCD

C. Alexandrou; T. Korzec; G. Koutsou; T. Leontiou

doi:10.1103/PhysRevD.89.034502

Nucleon Excited States in N$_f$=2 lattice QCD

High Energy Physics - Lattice 2014-02-12 v2 High Energy Physics - Phenomenology Nuclear Theory

Authors: C. Alexandrou , T. Korzec , G. Koutsou , T. Leontiou

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Abstract

We investigate the excited states of the nucleon using $N_f=2$ twisted mass gauge configurations with pion masses in the range of about 270 MeV to 450 MeV and one ensemble of $N_f=2$ Clover fermions at almost physical pion mass. We use two different sets of variational bases and study the resulting generalized eigenvalue problem. We present results for the two lowest positive and negative parity states.

Keywords

nucleon excited states lattice QCD twisted mass fermions Clover fermions variational method generalized eigenvalue problem parity states

Cite

@article{arxiv.1302.4410,
  title  = {Nucleon Excited States in N$_f$=2 lattice QCD},
  author = {C. Alexandrou and T. Korzec and G. Koutsou and T. Leontiou},
  journal= {arXiv preprint arXiv:1302.4410},
  year   = {2014}
}

Comments

Expanded variational basis, version accepted for Phys. Rev. D. 10 pages, 16 figures

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