Electroexcitation of nucleon resonances in a light-front relativistic quark model

TL;DR

This paper predicts the core quark contributions to nucleon resonance electroexcitations using a light-front relativistic quark model, comparing with experimental data to analyze meson-baryon effects across various momentum transfers.

Contribution

It introduces a detailed light-front relativistic quark model prediction for nucleon resonance electroexcitations and assesses meson-baryon contributions as a function of Q2.

Findings

Good agreement with experimental transition amplitudes at various Q2

Quantification of meson-baryon contributions across Q2 range

Predictions for specific nucleon resonances

Abstract

We report the predictions for the 3q core contributions to the electroexcitation of the resonances Delta(1232)3/2+, N(1440)1/2+, N(1520)3/2-, N(1535)1/2-, and N(1675)5/2- on the proton obtained in the light-front relativistic quark model (LF RQM). For these states, experimental data on the electroexcitation transition amplitudes allow us to make comparison between the experiment and LF RQM predictions in wide range of Q2 and also to quantify the expected meson-baryon contributions as a function of Q2.