This report describes the physics case, the resulting detector requirements, and the evolving
detector concepts for the experimental program at the Electron-Ion Collider (EIC). The EIC …

Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be
described by a local SU (3) gauge symmetry with charges called “color quantum numbers” …

Since the parton model was introduced by Feynman more than 50 years ago, much has
been learned about the partonic structure of the proton through a large body of high-energy …

Abstract The Spin Physics Detector (SPD) is a future multipurpose experiment foreseen to
run at the NICA collider, which is currently under construction at the Joint Institute for Nuclear …

After an introduction motivating the study of quarkonium production, we review the recent
developments in the phenomenology of quarkonium production in inclusive scatterings of …

It is shown that the azimuthal dependence of the distribution of hadrons in a quark jet is a
probe of the transverse spin of the quark initiating the jet. This results in a new spin …

The field of fragmentation functions of light quarks and gluons is reviewed. In addition to
integrated fragmentation functions, attention is paid to the dependence of fragmentation …

In this paper, we perform the first simultaneous QCD global analysis of data from semi-
inclusive deep inelastic scattering, Drell-Yan, e+ e-annihilation into hadron pairs, and proton …

A bstract We present lattice results for the non-perturbative Collins-Soper (CS) kernel, which
describes the energy-dependence of transverse momentum-dependent parton distributions …

This handbook provides a comprehensive review of transverse-momentum-dependent
parton distribution functions and fragmentation functions, commonly referred to as …