15 papers
Faddeev description of baryons in two-dimensional QCD with . I. Chiral spectrum, isospin, and strangeness
Ismail Zahed, Haocheng Zhang
We develop a light-front Faddeev description of baryons in two-dimensional QCD at , in which an exact coupled-channel representation identifies the quark--diquark picture as…
Experimental access to the gluonic origin of the proton mass
Zein-Eddine Meziani, Ismail Zahed
Most of the proton mass originates not from the Higgs mechanism but from the quantum structure of the QCD vacuum. The dominant contribution arises from the gluonic trace anomaly as…
Anomalies, Topology, and Hadron Structure in QCD
Ismail Zahed
Quantum Chromodynamics (QCD) provides a remarkable realization of how quantum effects reshape the symmetries of a classical field theory. The axial anomaly links chirality to gauge…
Hybrid hadrons at rest and on the light front
Edward Shuryak, Ismail Zahed
We present a unified description of heavy hybrid hadrons based on a constituent-gluon picture embedded in the Born-Oppenheimer (BO) framework. In this approach, the gluonic excitat…
Chiral Structure and Selection Rules in Light-Front Nucleon-Pentaquark Mixing
Fangcheng He, Edward Shuryak, Wan Wu +1
We present a light-front Hamiltonian analysis of nucleon-pentaquark mixing induced by - and -type transition operators in a fully Pauli-consistent five-quark basis. The pen…
The color force acting on a quark in the pion and nucleon
Wei-Yang Liu, Edward Shuryak, Ismail Zahed
In the Operator Product Expansion (OPE) of hard scattering amplitudes, the twist-3 operators describe local colored Lorentz forces acting on a quark, thereby providing a measure of…