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Nucleon excited states in Nf=2 lattice QCD

C. Alexandrou1,2, T. Korzec3, G. Koutsou2, and T. Leontiou4

  • 1Department of Physics, University of Cyprus, P. O. Box 20537, 1678 Nicosia, Cyprus
  • 2The Cyprus Institute, P. O. Box 27456, 1645 Nicosia, Cyprus
  • 3Institut für Physik, Humboldt Universität zu Berlin, Newtonstrasse 15, 12489 Berlin, Germany
  • 4General Department, Frederick University, 1036 Nicosia, Cyprus

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Phys. Rev. D 89, 034502 – Published 4 February, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.034502

Abstract

We investigate the excited states of the nucleon using Nf=2 twisted mass gauge configurations with pion masses in the range of about 270 to 450 MeV and one ensemble of Nf=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.

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Phys. Rev. D 89, 034502– Published 4 February, 2014
  • Received 20 February 2013

© 2014 American Physical Society

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