Electromagnetic proton form factors in large $N_c$ QCD

Abstract

The electromagnetic form factors of the proton are obtained using a particular realization of QCD in the large $N_c$ limit (${QCD}_{\infty }$), which sums up the infinite number of zero-width resonances to yield an Euler's Beta function (Dual-${QCD}_{\infty }$). The form factors $F_1(q^2)$ and $F_2(q^2)$, as well as $G_M(q^2)$ agree very well with reanalyzed space-like data in the whole range of momentum transfer. In addition, the predicted ratio ${\mu }_p{G}_E/G_M$ is in good agreement with recent polarization transfer measurements at Jefferson Lab.

10 pages

References in corpus (6)

• Measurement of GEp/GMp in ep -> ep to Q2 = 5.6 GeV2
• Two-photon exchange and elastic electron-proton scattering
• How to reconcile the Rosenbluth and the polarization transfer method in the measurement of the proton form factors
• Implications of the discrepancy between proton form factor measurements
• Matching Regge Theory to the OPE
• Pion form factor in large $N_c$ QCD

Cited by in corpus (7)

• Nucleon Form Factors in QCD
• Pion transition form factor and distribution amplitudes in large-Nc Regge models
• Axial-vector dominance predictions in quasielastic neutrino-nucleus scattering
• Hadronic contribution to the muon g-2: a theoretical determination
• General Resonance Mediation
• Electromagnetic form factors of the Delta(1232) in Dual-Large N_c QCD
• Electromagnetic proton form factors in dual large-$N_c$ QCD: an update