In this review, we present the current state of the art of our understanding of the spectrum of
excited strongly interacting particles and discuss methods that allow for a systematic and …

We review the description of the lowest-energy nucleon excitation—the Δ (1232)-resonance.
Much of the recent experimental effort has been focused on the precision measurements of …

Recent experimental and theoretical advancements have led to significant progress in our
understanding of the electromagnetic structure of nucleons (N), nucleon excitations (N∗) …

We present the first direct determination of meson-baryon resonance parameters from a
scattering amplitude calculated using lattice QCD. In particular, we calculate the elastic I …

Compton scattering from protons and neutrons provides important insight into the structure
of the nucleon. For photon energies up to about 300 MeV, the process can be parameterised …

We calculate the amplitude T 1 for forward doubly virtual Compton scattering in heavy-
baryon chiral perturbation theory, to fourth order in the chiral expansion and with the leading …

Recent progress on the extraction of electromagnetic properties of nucleon resonance
excitation through pion photo-and electroproduction is reviewed. Cross section data …

We review the current state of knowledge of the nucleon polarizabilities and of their role in
nucleon Compton scattering and in hydrogen spectrum. We discuss the basic concepts, the …

We perform a systematic study of the electromagnetic properties of exotic states to shed light
on their nature, which is still controversial and not fully understood. The magnetic dipole and …

We determine the Δ (1232) resonance parameters using lattice QCD and the Lüscher
method. The resonance occurs in elastic pion-nucleon scattering with JP= 3/2+ in the …