Hamiltonian effective field theory study of the N* (1440) resonance in lattice QCD

Simple item page
dc.contributor.authorLiu, Z.-W.
dc.contributor.authorKamleh, W.
dc.contributor.authorLeinweber, D.
dc.contributor.authorStokes, F.
dc.contributor.authorThomas, A.
dc.contributor.authorWu, J.-J.
dc.date.issued2017
dc.description.abstractWe examine the phase shifts and inelasticities associated with the N∗(1440) Roper resonance, and we connect these infinite-volume observables to the finite-volume spectrum of lattice QCD using Hamiltonian effective field theory. We explore three hypotheses for the structure of the Roper resonance. All three hypotheses are able to describe the scattering data well. In the third hypothesis the Roper resonance couples the low-lying bare basis-state component associated with the ground-state nucleon with the virtual meson-baryon contributions. Here the nontrivial superpositions of the meson-baryon scattering states are complemented by bare basis-state components, explaining their observation in contemporary lattice QCD calculations. The merit of this scenario lies in its ability to not only describe the observed nucleon energy levels in large-volume lattice QCD simulations but also explain why other low-lying states have been missed in today’s lattice QCD results for the nucleon spectrum.
dc.description.statementofresponsibilityZhan-Wei Liu, Waseem Kamleh, Derek B. Leinweber, Finn M. Stokes, Anthony W. Thomas and Jia-Jun Wu
dc.identifier.citationPhysical Review D (particles, fields, gravitation, and cosmology), 2017; 95(3):034034-1-034034-14
dc.identifier.doi10.1103/PhysRevD.95.034034
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.orcidKamleh, W. [0000-0002-6177-5366]
dc.identifier.orcidLeinweber, D. [0000-0002-4745-6027]
dc.identifier.orcidStokes, F. [0000-0003-1763-8847]
dc.identifier.orcidThomas, A. [0000-0003-0026-499X]
dc.identifier.urihttp://hdl.handle.net/2440/105700
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.granthttp://purl.org/au-research/grants/arc/CE1101004
dc.relation.granthttp://purl.org/au-research/grants/arc/LE160100051
dc.relation.granthttp://purl.org/au-research/grants/arc/DP150103101
dc.relation.granthttp://purl.org/au-research/grants/arc/DP150103164
dc.relation.granthttp://purl.org/au-research/grants/arc/DP120104627
dc.relation.granthttp://purl.org/au-research/grants/arc/LE120100181
dc.rights© 2017 American Physical Society
dc.source.urihttps://doi.org/10.1103/physrevd.95.034034
dc.titleHamiltonian effective field theory study of the N* (1440) resonance in lattice QCD
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Physics publications