Electromagnetic Baryon Form Factors from Holographic QCD

Simple item page
dc.creatorKim, Keun-Young
dc.creatorZahed, Ismail
dc.date2008-07-01
dc.date.accessioned2026-07-07T12:48:50Z
dc.date.available2026-07-07T12:48:50Z
dc.descriptionIn the holographic model of QCD suggested by Sakai and Sugimoto, baryons are chiral solitons sourced by D4 instantons in bulk of size 1/\sqrtλ with λ=g^2N_c. We quantize the D4 instanton semiclassically using \hbar=1/(N_cλ) and non-rigid constraints on the vector mesons. The holographic baryon is a small chiral bag in the holographic direction with a Cheshire cat smile. The vector-baryon interactions occur at the core boundary of the instanton in D4. They are strong and of order 1/\sqrt{\hbar}. To order \hbar^0 the electromagnetic current is entirely encoded on the core boundary and vector-meson dominated. To this order, the electromagnetic charge radius is of order λ^0. The meson contribution to the baryon magnetic moments sums identically to the core contribution. The proton and neutron magnetic moment are tied by a model independent relation similar to the one observed in the Skyrme model.
dc.description26 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/0807.0033
dc.identifierhttp://arxiv.org/abs/0807.0033
dc.identifierJHEP 0809:007,2008
dc.identifierdoi:10.1088/1126-6708/2008/09/007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/222197
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectNuclear Theory
dc.titleElectromagnetic Baryon Form Factors from Holographic QCD
dc.typetext

Files

Collections

arXiv