Transition form factors: γ∗+p → Δ (1232), Δ (1600)

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Autor(es): dc.contributorNanjing University-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorArgonne National Laboratory-
Autor(es): dc.contributorJARA-
Autor(es): dc.contributorUniversidad Pablo de Olavide-
Autor(es): dc.contributorNuclear Physics and Cosmology-
Autor(es): dc.contributorJustus-Liebig-Universität Gießen-
Autor(es): dc.creatorLu, Y.-
Autor(es): dc.creatorChen, C.-
Autor(es): dc.creatorCui, Z. F.-
Autor(es): dc.creatorRoberts, C. D.-
Autor(es): dc.creatorSchmidt, S. M.-
Autor(es): dc.creatorSegovia, J.-
Autor(es): dc.creatorZong, H. S.-
Data de aceite: dc.date.accessioned2025-08-21T16:00:52Z-
Data de disponibilização: dc.date.available2025-08-21T16:00:52Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2019-08-05-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.100.034001-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/228716-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/228716-
Descrição: dc.descriptionElectroproduction form factors describing the γ∗p→Δ+(1232), Δ+(1600) transitions are computed using a fully dynamical diquark-quark approximation to the Poincaré-covariant three-body bound-state problem in relativistic quantum field theory. In this approach, the Δ(1600) is an analogue of the Roper resonance in the nucleon sector, appearing as the simplest radial excitation of the Δ(1232). Precise measurements of the γ∗p→Δ+(1232) transition already exist on 0≤Q2≲8 GeV2, and the calculated results compare favorably with the data outside the meson-cloud domain. The predictions for the γ∗p→Δ+(1600) magnetic dipole and electric quadrupole transition form factors are consistent with the empirical values at the real photon point, and extend to Q2≈6mp2, enabling a meaningful direct comparison with experiment once analysis of existing data is completed. In both cases, the electric quadrupole form factor is particularly sensitive to deformation of the Δ-baryons. Interestingly, while the γ∗p→Δ+(1232) transition form factors are larger in magnitude than those for γ∗p→Δ+(1600) in some neighborhood of the real photon point, this ordering is reversed on Q2≳2mp2, suggesting that the γ∗p→Δ+(1600) transition is more localized in configuration space.-
Descrição: dc.descriptionDepartment of Physics Nanjing University-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271-
Descrição: dc.descriptionPhysics Division Argonne National Laboratory-
Descrição: dc.descriptionInstitute for Advanced Simulation Forschungszentrum Jülich JARA-
Descrição: dc.descriptionDepartamento de Sistemas Físicos Químicos y Naturales Universidad Pablo de Olavide-
Descrição: dc.descriptionJoint Center for Particle Nuclear Physics and Cosmology-
Descrição: dc.descriptionInstitut für Theoretische Physik Justus-Liebig-Universität Gießen-
Descrição: dc.descriptionInstituto de Física Teórica Universidade Estadual Paulista, Rua Dr. Bento Teobaldo Ferraz, 271-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review D-
???dc.source???: dc.sourceScopus-
Título: dc.titleTransition form factors: γ∗+p → Δ (1232), Δ (1600)-
Tipo de arquivo: dc.typelivro digital-
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