title: Hamiltonian Effective Field Theory Study of the N^{*}(1535) Resonance in Lattice QCD.
abstract: Drawing on experimental data for baryon resonances, Hamiltonian effective field theory (HEFT) is used to predict the positions of the finite-volume energy levels to be observed in lattice QCD simulations of the lowest-lying J^{P}=1/2^{-} nucleon excitation. In the initial analysis, the phenomenological parameters of the Hamiltonian model are constrained by experiment and the finite-volume eigenstate energies are a prediction of the model. The agreement between HEFT predictions and lattice QCD results obtained on volumes with spatial lengths of 2 and 3 fm is excellent. These lattice results also admit a more conventional analysis where the low-energy coefficients are constrained by lattice QCD results, enabling a determination of resonance properties from lattice QCD itself. Finally, the role and importance of various components of the Hamiltonian model are examined.
authors.affiliation: Special Research Center for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
authors.forename: Zhan-Wei
authors.initials: ZW
authors.lastname: Liu
authors.affiliation: Special Research Center for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
authors.forename: Waseem
authors.initials: W
authors.lastname: Kamleh
authors.affiliation: Special Research Center for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
authors.forename: Derek B
authors.initials: DB
authors.lastname: Leinweber
authors.affiliation: Special Research Center for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
authors.forename: Finn M
authors.initials: FM
authors.lastname: Stokes
authors.affiliation: Special Research Center for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.|ARC Centre of Excellence in Particle Physics at the Terascale, Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
authors.forename: Anthony W
authors.initials: AW
authors.lastname: Thomas
authors.affiliation: Special Research Center for the Subatomic Structure of Matter (CSSM), Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia.
authors.forename: Jia-Jun
authors.initials: JJ
authors.lastname: Wu