Spin 3/2 Baryons and Form Factors in AdS/QCD
Hyo Chul Ahn, Deog Ki Hong, Cheonsoo Park, and Sanjay Siwach
TL;DR
This paper models spin 3/2 baryons using AdS/QCD, calculating their spectrum, form factors, and meson-baryon couplings, and predicts new coupling values consistent with other methods.
Contribution
It introduces a 5D Rarita-Schwinger field approach to describe spin 3/2 baryons and computes their properties within the AdS/QCD framework, including novel coupling predictions.
Findings
Calculated Delta resonance spectrum and form factors.
Unified meson-baryon couplings from bulk AdS/QCD.
Predicted new coupling constants for Delta resonances.
Abstract
We study the 5D Rarita-Schwinger fields to describe spin 3/2 baryons in AdS/QCD. We calculate the spectrum of spin 3/2 baryons (Delta resonances) and their form factors, together with meson-baryon couplings from AdS/QCD. The transition form-factors between Delta and nucleon are evaluated. Both pion and rho meson couplings have the same origin in the bulk and hence unified. The numerical values for the meson-baryon transition couplings are consistent with the values obtained from other methods. We also predict the numerical values of some new couplings associated with Delta resonances.
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