2010/07/28 by M. Selim Mahbub, M. S. Mahbub, Waseem Kamleh +3
Physics and Astronomy · #Fermion #Ground state #Lattice (music) #Lattice QCD #Nuclear physics research studies #Nucleon #Parity (physics) #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Quark #hep-lat
paper · pdf · doi:10.1016/j.physletb.2010.08.049
published as Phys.Lett.B693:351-357,2010 · 9 pages
arxiv created 2010/07/28 · openalex publication_date 2010/08/27 · arxiv updated 2010/09/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present results for the negative parity low-lying state of the nucleon, N(1)/(2)- (1535 MeV) \rm S11, from a variational analysis method. The analysis is performed in quenched QCD with the FLIC fermion action. The principal focus of this paper is to explore the level ordering between the Roper (\rmP11) and the negative parity ground (\rmS11) states of the nucleon. Evidence of the physical level ordering is observed at light quark masses. A wide variety of smeared-smeared correlation functions are used to construct correlation matrices. A comprehensive correlation matrix analysis is performed to ensure an accurate isolation of the N(1)/(2)- state.