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dc.contributor.authorLomon, Earle L.
dc.contributor.authorPaceti, Simone
dc.date.accessioned2012-08-15T15:55:54Z
dc.date.available2012-08-15T15:55:54Z
dc.date.issued2012-06
dc.date.submitted2012-01
dc.identifier.issn1550-7998
dc.identifier.issn1089-4918
dc.identifier.urihttp://hdl.handle.net/1721.1/72143
dc.description.abstractThe extended Lomon-Gari-Krümpelmann model of nucleon electromagnetic form factors, which embodies ρ, ρ′, ω, ω′, and ϕ vector meson contributions and the perturbative QCD high momentum transfer behavior has been extended to the timelike region. Breit-Wigner formulas with momentum-dependent widths have been considered for broad resonances in order to have a parametrization for the electromagnetic form factors that fulfills, in the timelike region, constraints from causality, analyticity, and unitarity. This analytic extension of the Lomon-Gari-Krümpelmann model has been used to perform a unified fit to all the nucleon electromagnetic form factor data, in the spacelike and timelike region (where form factor values are extracted from e+e-↔NN̅ cross sections data). The knowledge of the complete analytic structure of form factors enables predictions at extended momentum transfer, and also of timelike observables such as the ratio between electric and magnetic form factors and their relative phase.en_US
dc.language.isoen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1103/PhysRevD.85.113004en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourceAPSen_US
dc.titleTimelike and spacelike electromagnetic form factors of nucleons, a unified descriptionen_US
dc.typeArticleen_US
dc.identifier.citationLomon, Earle, and Simone Pacetti. “Timelike and Spacelike Electromagnetic Form Factors of Nucleons, a Unified Description.” Physical Review D 85.11 (2012): 113004. © 2012 American Physical Society.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Center for Theoretical Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Laboratory for Nuclear Scienceen_US
dc.contributor.approverLomon, Earle L.
dc.contributor.mitauthorLomon, Earle L.
dc.relation.journalPhysical Review Den_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLomon, Earle; Pacetti, Simoneen
dc.identifier.orcidhttps://orcid.org/0000-0002-6695-1824
mit.licensePUBLISHER_POLICYen_US


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