2013/02/28 by Constantia Alexandrou, C. Alexandrou, T. Korzec +5
Physics and Astronomy · #Nuclear physics research studies #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-lat #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.89.034502
published as Phys. Rev. D 89, 034502 (2014) · Expanded variational basis, version accepted for Phys. Rev. D. 10 pages, 16 figures
arxiv created 2014/01/29 · openalex publication_date 2014/02/04 · arxiv updated 2014/02/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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.