Analysis of the quadrupole deformation of $Δ$(1232) within an effective Lagrangian model for pion photoproduction from the nucleon

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/175582We present an extraction of the E2/M1 ratio of the $Δ$(1232) from experimental data applying an effective Lagrangian model. We compare the result obtained with different nucleonic models and we reconcile the experimental results with the Lattice QCD calculations.3 pages, 1 figure, 2 tables. Talk presented at the IV International Conference on Quarks and Nuclear Physics (QNP06), 5th June 2006 - 10th June 2006, Madrid. To be published in The European Physical Journal ANuclear TheoryAnalysis of the quadrupole deformation of $Δ$(1232) within an effective Lagrangian model for pion photoproduction from the nucleontext