Electromagnetic excitation of the Delta(1232)-resonance
| dc.creator | Pascalutsa, Vladimir | |
| dc.creator | Vanderhaeghen, Marc | |
| dc.creator | Yang, Shin Nan | |
| dc.date | 2006-09-01 | |
| dc.date | 2006-10-06 | |
| dc.date.accessioned | 2026-07-07T10:25:22Z | |
| dc.date.available | 2026-07-07T10:25:22Z | |
| dc.description | We review the description of the lowest-energy nucleon excitation -- the $Δ$(1232)-resonance. Much of the recent experimental effort has been focused on the precision measurements of the nucleon-to-$Δ$ transition by means of electromagnetic probes. We confront the results of these measuremnts with the state-of-the-art calculations based on chiral effective-field theories (EFT), lattice QCD, large-$N_c$ relations, perturbative QCD, and QCD-inspired models. We also discuss the link of the nucleon-to-$Δ$ form factors to generalized parton distributions (GPDs). Some of the theoretical approaches are reviewed in detail, in particular, recent dynamical and unitary-isobar models of pion electroproduction, which are extensively used in the interpretation of experiments. Also, the novel extension of chiral EFTs to the energy domain of the $Δ$-resonance is described in detail. The two-photon exchange effects in the electroexcitation of the $\De$-resonance are addressed here as well. | |
| dc.description | 150 pp, 67 figs; final version - to appear in Physics Reports | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0609004 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0609004 | |
| dc.identifier | Phys.Rept.437:125-232,2007 | |
| dc.identifier | doi:10.1016/j.physrep.2006.09.006 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/176518 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Nuclear Theory | |
| dc.title | Electromagnetic excitation of the Delta(1232)-resonance | |
| dc.type | text |