The past decades witnessed the golden era of hadron physics. Many excited open heavy
flavor mesons and baryons have been observed since 2017. We shall provide an updated …

Abstract This White Paper aims at highlighting the important benefits in the science reach of
the EIC. High luminosity operation is generally desirable, as it enables producing and …

The physics of the gravitational form factors of the proton, as well as their understanding
within quantum chromodynamics, has advanced significantly in the past two decades …

The near-threshold photo or electroproduction of heavy vector quarkonium off the proton is
studied in quantum chromodynamics. Similar to the high-energy limit, the production …

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

A bstract We revisit the problem of small Bjorken-x evolution of the gluon and flavor-singlet
quark helicity distributions in the shock wave (s-channel) formalism. Earlier works on the …

We present a numerical solution of the revised version [J. High Energy Phys. 07 (2022) 095
JHEPFG 1029-8479 10.1007/JHEP07 (2022) 095] of the small-x helicity evolution equations …

Using a symmetry-preserving formulation of a vector× vector contact interaction (SCI) and
treating the proton as a quark+ interacting-diquark bound state, whose structure is obtained …

We address the proton spin puzzle with a fully relativistic and nonperturbative approach
based on a light-front quantized Hamiltonian with quantum chromodynamics (QCD) input …

We present results for the isovector electromagnetic form factors of the nucleon computed on
the coordinated lattice simulations ensembles with N f= 2+ 1 flavors of O (a)-improved …