626 citations · 14.4k across the 220 of their papers we have counts for
11 papers · 2 filters
Features and flaws of a contact interaction treatment of the kaon
Chen Chen, Lei Chang, Craig D. Roberts +3
Elastic and semileptonic transition form factors for the kaon and pion are calculated using the leading-order in a global-symmetry-preserving truncation of the Dyson-Schwinger equa…
Studies of Nucleon Resonance Structure in Exclusive Meson Electroproduction
I. G. Aznauryan, A. Bashir, V. Braun +24
Studies of the structure of excited baryons are key to the N* program at Jefferson Lab. Within the first year of data taking with the Hall B CLAS12 detector following the 12 GeV up…
Electric dipole moment of the rho-meson
Mario Pitschmann, Chien-Yeah Seng, Michael J. Ramsey-Musolf +3
At an hadronic scale the effect of CP-violating interactions that typically appear in extensions of the Standard Model may be described by an effective Lagrangian, in which the ope…
Existence and stability of multiple solutions to the gap equation
Kun-lun Wang, Si-xue Qin, Yu-xin Liu +3
We argue by way of examples that, as a nonlinear integral equation, the gap equation can and does possess many physically distinct solutions for the dressed-quark propagator. The e…
Dressed-quarks and the nucleon's axial charge
Lei Chang, Craig D. Roberts, Sebastian M. Schmidt
The nucleon's axial charge, g_A, expresses features that are both fundamental to the strong interaction and crucial to its connection with weak interaction physics. We show that dy…
Spectrum of hadrons with strangeness
Chen Chen, Lei Chang, Craig D. Roberts +2
We describe a calculation of the spectrum of strange and nonstrange hadrons that simultaneously correlates the dressed-quark-core masses of meson and baryon ground- and excited-sta…
Strong QCD and Dyson-Schwinger Equations
Craig D. Roberts
The real-world properties of quantum chromodynamics (QCD) - the strongly-interacting piece of the Standard Model - are dominated by two emergent phenomena: confinement; namely, the…
Confinement contains condensates
Stanley J. Brodsky, Craig D. Roberts, Robert Shrock +1
Dynamical chiral symmetry breaking and its connection with the generation of hadron masses has historically been viewed as a vacuum phenomenon. We argue that confinement makes such…
Heavy-quark symmetries in the light of nonperturbative QCD approaches
Bruno El-Bennich, Craig D. Roberts, Mikhail A. Ivanov
We critically review the validity of heavy-quark spin and flavor symmetries in heavy-light decay constants, form factors and effective couplings obtained within a nonperturbative f…
Hadron physics and dynamical chiral symmetry breaking
Lei Chang, Craig D. Roberts, David J. Wilson
Physics is an experimental science; and a constructive feedback between theory and extant and forthcoming experiments is necessary if an understanding of nonperturbative QCD is to…
Collective perspective on advances in Dyson-Schwinger Equation QCD
Adnan Bashir, Lei Chang, Ian C. Cloet +4
We survey contemporary studies of hadrons and strongly interacting quarks using QCD's Dyson-Schwinger equations, addressing: aspects of confinement and dynamical chiral symmetry br…