Probing the quark-gluon interaction with hadrons

Abstract

We present a unified picture of mesons and baryons in the Dyson-Schwinger/Bethe-Salpeter approach, wherein the quark-gluon and quark-(anti)quark interaction follow from a systematic truncation of the QCD effective action and includes all its tensor structures. The masses of some of the ground state mesons and baryons are found to be in reasonable agreement with the expectations of a `quark-core calculation', suggesting a partial insensitivity to the details of the quark-gluon interaction. However, discrepancies remain in the meson sector, and for excited baryons, that suggest higher order corrections are relevant and should be investigated following the methods outlined herein.

6 pages, 5 figures, 3 tables. Version to appear in PLB

References in corpus (20)

• Big-Bang Nucleosynthesis
• Chiral symmetry breaking in continuum QCD
• Sketching the Bethe-Salpeter kernel
• Dressed-quark anomalous magnetic moments
• Nucleon electromagnetic form factors from the covariant Faddeev equation
• Completing the picture of the Roper resonance
• Nucleon mass and sigma term from lattice QCD with two light fermion flavors
• Perspective on rainbow-ladder truncation
• Beyond the rainbow: effects from pion back-coupling
• Hadronic unquenching effects in the quark propagator
• The quark-gluon vertex in Landau gauge bound-state studies
• Spectra of heavy quarkonia in a Bethe-Salpeter-equation approach
• Spectra of heavy mesons in the Bethe-Salpeter approach
• A new method for determining the quark-gluon vertex
• Exciting flavored bound states
• Mass spectra and Regge trajectories of light mesons in the Bethe-Salpeter approach
• A covariant study of tensor mesons
• Octet and Decuplet masses: a covariant three-body Faddeev calculation
• Hadronic Observables from Dyson-Schwinger and Bethe-Salpeter equations
• Meson-baryon sigma terms in QCD Sum Rules

Cited by in corpus (29)

• Baryons as relativistic three-quark bound states
• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• Light mesons in QCD and unquenching effects from the 3PI effective action
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Natural constraints on the gluon-quark vertex
• Masses of ground-state mesons and baryons, including those with heavy quarks
• On light baryons and their excitations
• Baryon effects on the location of QCD's critical end point
• Quark gap equation with non-abelian Ball-Chiu vertex
• Light Baryon Spectroscopy
• Recent developments in bound-state calculations using the Dyson-Schwinger and Bethe-Salpeter equations
• Non-Abelian Ball-Chiu vertex for arbitrary Euclidean momenta
• Effects of a dressed quark-gluon vertex in vector heavy-light mesons and theory average of B(c)* meson mass
• Effects of a dressed quark-gluon vertex in pseudoscalar heavy-light mesons
• Excited hadrons and the analytical structure of bound-state interaction kernels
• Probing the tensor structure of lattice three-gluon vertex in Landau gauge
• The Quark-Gluon Vertex and the QCD Infrared Dynamics
• Practical scheme from QCD to phenomena via Dyson-Schwinger equations
• Light-quarkonium spectra and orbital-angular-momentum decomposition in a Bethe-Salpeter-equation approach
• Bound states in Functional Renormalization Group
• The Quark Propagator in a Truncation Scheme beyond the Rainbow Approximation
• Quasi-exotic open-flavor mesons
• A comprehensive approach to the physics of mesons
• On the low-energy spectrum of an SU(2) gauge theory with dynamical fermions
• The Equal-Time Quark Propagator in Coulomb Gauge
• Electromagnetic transition form factors of baryons in a relativistic Faddeev approach
• Derivation of the gap and Bethe-Salpeter equations at large $N_c$ limit and symmetry preserving truncations
• Baryons with functional methods
• Perturbative method to estimate meson masses in the framework of Bethe-Salpeter equation beyond its dominant interaction