The renormalization group plays an essential role in many areas of physics, both
conceptually and as a practical tool to determine the long-distance low-energy properties of …

We discuss our present knowledge of α s, the fundamental running coupling or effective
charge of Quantum Chromodynamics (QCD). A precise understanding of the running of α s …

We review the present theoretical and empirical knowledge for α s, the fundamental
coupling underlying the interactions of quarks and gluons in Quantum Chromodynamics …

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 dynamics of the QCD gauge sector give rise to non-perturbative phenomena that are
crucial for the internal consistency of the theory; most notably, they account for the …

We highlight the progress, current status, and open challenges of QCD-driven physics, in
theory and in experiment. We discuss how the strong interaction is intimately connected to a …

Beginning with results for the leading-twist two-particle distribution amplitudes of π π-and K-
mesons, each of which exhibits dilation driven by the mechanism responsible for the …

The last five years have brought considerable progress in the study of the bound-state
problem in continuum quantum field theory. We highlight a subset of that progress; viz., that …

We present a quantitative analysis of chiral symmetry breaking in two-flavor continuum QCD
in the quenched limit. The theory is set up at perturbative momenta, where asymptotic …

Within contemporary hadron physics there are two common methods for determining the
momentum-dependence of the interaction between quarks: the top-down approach, which …