About 120 baryons and baryon resonances are known, from the abundant nucleon with u
and d light-quark constituents up to the Ξ b−=(bsd), which contains one quark of each …

The composite nature of baryons manifests itself in the existence of a rich spectrum of
excited states, in particular in the important mass region 1–2 GeV for the light-flavoured …

The nucleon resonances are investigated within a dynamical coupled-channels model of π
N and γ N reactions up to the invariant mass W= 2 GeV. The meson-baryon (MB) channels …

Studies of the structure of excited baryons are key factors to the N* program at Jefferson Lab
(JLab). Within the first year of data taking with the Hall B CLAS12 detector following the 12 …

Elastic πN scattering and the world data of the family of reactions π− p→ ηn, K 0 Λ, K 0 Σ 0,
K+ Σ−, and π+ p→ K+ Σ+ are described simultaneously in an analytic, unitary, coupled …

During its long-lasting history, the Λ (1405) has become a benchmark for our understanding
of the SU (3) hadron dynamics. Starting with its theoretical prediction and later experimental …

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

The analytic properties of scattering amplitudes provide important information. Besides the
cuts, the poles and zeros on the different Riemann sheets determine the global behavior of …

We show that two almost degenerate poles near the π Δ threshold and the next higher mass
pole in the P 11 partial wave of π N scattering evolve from a single bare state through its …

With an effective Lagrangian approach, we analyze several NN→ NN π π channels by
including various resonances with mass up to 1. 72 GeV. For the channels with the pion pair …