Diquark Masses from Lattice QCD

Abstract

We present first results for diquark correlation functions calculated in Landau gauge on the lattice. Masses have been extracted from the long distance behaviour of these correlation functions. We find that the ordering of diquark masses with spin 0 and 1 states in colour anti-triplet and sextet channels is in accordance with instanton motivated interaction models. Although we find evidence for an attractive interaction in colour anti-triplet states with a splitting between spin 0 and spin 1 diquarks that can account for the mass splitting between the nucleon and the delta, there is no evidence for a deeply bound diquark state.

12 pages, LaTeX2e uses revtex, 3 EPS-figures, small corrections, references updated

References in corpus (3)

• QCD at Finite Baryon Density: Nucleon Droplets and Color Superconductivity
• Diquark Bose Condensates in High Density Matter and Instantons
• Dibaryons in nuclear matter

Cited by in corpus (73)

• Dyson-Schwinger equations: a tool for hadron physics
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Nucleon electromagnetic form factors
• High Density QCD and Instantons
• Aspects of Hadron Physics
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Heavy baryon/meson ratios in relativistic heavy ion collisions
• Bethe-Salpeter equation and a nonperturbative quark-gluon vertex
• Light Quarks in the Instanton Vacuum at Finite Baryon Density
• Evidence for diquarks in lattice QCD
• Parity doublets and chiral symmetry restoration in baryon spectrum
• Nucleon mass and pion loops
• Diquarks and Λ_{b}\toΛ_c weak decays
• Role of diquark correlations and the pion cloud in nucleon elastic form factors
• Sigma Terms of Light-Quark Hadrons
• Tetraquark spectroscopy
• Analysis of the scalar and axial-vector heavy diquark states with QCD sum rules
• Masses of light tetraquarks and scalar mesons in the relativistic quark model
• A covariant view on the nucleons' quark core
• Diquark correlations in baryons on the lattice with overlap quarks
• Analysis of the light-flavor scalar and axial-vector diquark states with QCD sum rules
• Comparison of gluon flux-tube distributions for quark-diquark and quark-antiquark hadrons
• Quark-diquark equation of state and compact star structure
• Lattice Simulation of Diquark Condensation in Dense Matter
• Hybrid and Conventional Baryons in the Flux-Tube Model
• Baryon structure in a quark-confining non-local NJL model
• Emergent Hadrons and Diquarks
• Diquark effects in light baryon correlators from lattice QCD
• Light hadron and diquark spectroscopy in quenched QCD with overlap quarks on a large lattice
• Diquark mass differences from unquenched lattice QCD
• Diquark properties from full QCD lattice simulations
• Chiral effective theory of diquarks and the U_A(1) anomaly
• Spectrum of singly heavy baryons from a chiral effective theory of diquarks
• Neutron electric dipole moment: Constituent-dressing and compositeness
• Heavy baryon spectrum with chiral multiplets of scalar and vector diquarks
• Diquark Bose-Einstein Condensation and Nuclear Matter
• Spectra of Free Diquark in the Bethe-Salpeter Approach
• Charge exchange ${\rho }^0{\pi }^{+}$ photoproduction and implications for searches of exotic meson
• Diquarks: a QCD sum rule perspective
• Analysis of the X(1576) as a tetraquark state with the QCD sum rules
• Novel pentaquark picture for singly heavy baryons from chiral symmetry
• Production Processes as a Tool to Study Parameterizations of Quark Confinement
• Axial Vector $cc$ and $bb$ Diquark Masses from QCD Laplace Sum-Rules
• Quark confinement potential examined by excitation energy of the Lambda_c and Lambda_b baryons in a quark-diquark model
• Analysis of the scalar doubly heavy tetraquark states with QCD sum rules
• Excitation energy spectra of the Lambda_c and Lambda_b baryons in a finite-size diquark model
• Quark-diquark potential and diquark mass from Lattice QCD
• Is there diquark clustering in the nucleon?
• Analysis of the nonet scalar mesons as tetraquark states with new QCD sum rules
• Ground state mass spectrum for scalar diquarks with Bethe-Salpeter equation
• Asymptotically conformal CFL quark matter within a nonlocal chiral quark model
• Diquark bound states with a completely crossed ladder truncation
• Regge trajectories for the light diquarks
• Strong decays of singly heavy baryons from a chiral effective theory of diquarks
• The mass of the nucleon in a chiral quark-diquark model
• Hadron properties from QCD bound-state equations: A status report
• Diquarks in the nilpotency expansion of QCD and their role at finite chemical potential
• Chiral effective model of cold and dense two-color QCD: The linear sigma model approach
• Quark-Diquark Equations of State Models: The Role of Interactions
• Sum rule for the partial decay rates of bottom hadrons based on the dynamical supersymmetry of the $\bar{s}$ quark and the $ud$ diquark
• Investigation of Mass and Decay Characteristics of the Light-Strange Tetraquark
• Revisiting light-flavor diquarks in the inverse matrix method of QCD sum rules
• Excitation spectra of heavy baryons in diquark models
• Building diquark model from Lattice QCD
• Non-perturbative Analysis of Various Mass Generation by Gluonic Dressing Effect with the Schwinger-Dyson Formalism in QCD
• Dynamical supersymmetry for strange quark and $ud$ antidiquark in hadron mass spectrum
• Searching for diquarks in hadrons
• Renormalizing the Quark-Meson-Diquark Model
• Nonperturbative investigation of the diquark potential
• Chiral effective theory of scalar and vector diquarks revisited
• Isospin breaking from diquark clustering
• Strings of diquark-quark (QQ)Q baryon before phase transition
• Light hadron spectroscopy in quenched QCD with overlap fermions