We review results for the phase diagram of QCD, the properties of quarks and gluons and
the resulting properties of strongly interacting matter at finite temperature and chemical …

The last decade has seen a marked shift in how the internal structure of hadrons is
understood. Modern experimental facilities, new theoretical techniques for the continuum …

Visible matter is characterised by a single mass scale; namely, the proton mass. The
proton's existence and structure are supposed to be described by quantum chromodynamics …

The Lagrangian that defines quantum chromodynamics (QCD), the strong interaction piece
of the Standard Model, appears very simple. Nevertheless, it is responsible for an …

Discovered in 1963, the Roper resonance appears to be an exact copy of the proton except
that its mass is 50% greater and it is unstable. These features of the Roper have been very …

The topical workshop Strong QCD from Hadron Structure Experiments took place at
Jefferson Lab from November 6–9, 2019. Impressive progress in relating hadron structure …

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

A symmetry-preserving truncation of the strong-interaction bound-state equations is used to
calculate the spectrum of ground-state J= 1/2^+ J= 1/2+, 3/2^+ 3/2+(qq^ ′ q^ ′ ′)(qq′ q …

An algebraic Ansatz for the proton's Poincaré-covariant wave function, which includes both
scalar and pseudovector diquark correlations, is used to calculate proton valence, sea, and …

We use a continuum quark+ diquark approach to the nucleon bound-state problem in
relativistic quantum field theory to deliver parameter-free predictions for the nucleon axial …