626 citations · 14.4k across the 220 of their papers we have counts for
12 papers · 1 filter
Flavor SU(4) breaking between effective couplings
Bruno El-Bennich, Gastão Krein, Lei Chang +2
Using a framework in which all elements are constrained by Dyson-Schwinger equation studies in QCD, and therefore incorporates a consistent, direct and simultaneous description of…
Looking into the matter of light-quark hadrons
Craig D. Roberts
In tackling QCD, a constructive feedback between theory and extant and forthcoming experiments is necessary in order to place constraints on the infrared behaviour of QCD's β-funct…
Expanding the concept of in-hadron condensates
Lei Chang, Craig D. Roberts, Peter C. Tandy
The in-pseudoscalar-meson condensate can be represented through the pseudoscalar-meson's scalar form factor at zero momentum transfer. With the aid of a mass formula for scalar mes…
Commentary on rainbow-ladder truncation for excited states and exotics
Si-xue Qin, Lei Chang, Yu-xin Liu +2
Ground-state, radially-excited and exotic scalar-, vector- and flavoured-pseudoscalar-mesons are studied in rainbow-ladder truncation using an interaction kernel that is consonant…
Interaction model for the gap equation
Si-xue Qin, Lei Chang, Yu-xin Liu +2
We explain a form for the rainbow-ladder kernel whose momentum-dependence is consonant with modern DSE- and lattice-QCD results, and assess its capability as a tool in hadron physi…
Dressed-quarks and the Roper resonance
Craig D. Roberts, Ian C. Cloet, Lei Chang +1
A Dyson-Schwinger equation calculation of the light hadron spectrum, which correlates the masses of meson and baryon ground- and excited-states within a single framework, produces…
Opportunities and Challenges for Theory in the N* program
Craig D. Roberts
The N*-program provides a path to understanding the essentially-nonperturbative fundamentals at the heart of the Standard Model: confinement and dynamical chiral symmetry breaking.…
Selected highlights from the study of mesons
Lei Chang, Craig D. Roberts, Peter C. Tandy
We provide a brief review of recent progress in the study of mesons using QCD's Dyson-Schwinger equations. Along the way we touch on aspects of confinement and dynamical chiral sym…
Tracing masses of ground-state light-quark mesons
Lei Chang, Craig D. Roberts
We describe a symmetry-preserving calculation of the meson spectrum, which combines a description of pion properties with reasonable estimates of the masses of heavier light-quark…
pi- and rho-mesons, and their diquark partners, from a contact interaction
H. L. L. Roberts, A. Bashir, L. X. Gutierrez-Guerrero +2
We present a unified Dyson-Schwinger equation treatment of static and electromagnetic properties of pseudoscalar and vector mesons, and scalar and axial-vector diquark correlations…
Pion and kaon valence-quark parton distribution functions
Trang Nguyen, Adnan Bashir, Craig D. Roberts +1
A rainbow-ladder truncation of QCD's Dyson-Schwinger equations, constrained by existing applications to hadron physics, is employed to compute the valence-quark parton distribution…
Masses of ground and excited-state hadrons
H. L. L. Roberts, L. Chang, I. C. Cloet +1
We present the first Dyson-Schwinger equation calculation of the light hadron spectrum that simultaneously correlates the masses of meson and baryon ground- and excited-states with…