Diquark correlations in baryons on the lattice with overlap quarks

Abstract

We evaluate baryon wave functions in both the Coulomb and Landau gauge in lattice QCD. These are constructed from quark propagators calculated with the overlap Dirac operator on quenched gauge configurations at beta = 6. By comparing baryon states that differ in their diquark content, we find evidence for enhanced correlation in the scalar diquark channel, as favored by quark models. We also summarize earlier results for diquark masses in the Landau gauge, casting them in a form more easily compared with subsequent studies.

arXiv comment9 pages, 12 figures, v2 as appears in PRD

References in corpus (19)

• Exactly massless quarks on the lattice
• A New Way to Set the Energy Scale in Lattice Gauge Theories and its Application to the Static Force and ${\alpha }_s$ in SU(2) Yang--Mills Theory
• Exact chiral symmetry on the lattice and the Ginsparg-Wilson relation
• Diquarks and Exotic Spectroscopy
• A construction of lattice chiral gauge theories
• Exotica
• The Nf=0 heavy quark potential from short to intermediate distances
• Locality properties of Neuberger's lattice Dirac operator
• Chiral Determinant as an Overlap of Two Vacua
• Vector like gauge theories with almost massless fermions on the lattice
• Precision computation of a low-energy reference scale in quenched lattice QCD
• Evidence for the Role of Instantons in Hadron Structure from Lattice QCD
• Evidence for diquarks in lattice QCD
• Diquark Masses from Lattice QCD
• K^0-\bar K^0 mixing beyond the standard model and CP-violating electroweak penguins in quenched QCD with exact chiral symmetry
• Calculation and Interpretation of Hadron Correlation Functions in Lattice QCD
• Probing hadron wave functions in Lattice QCD
• Light hadron and diquark spectroscopy in quenched QCD with overlap quarks on a large lattice
• Comparison of Lattice Coulomb Gauge Wave Functions in Quenched Approximation and with Dynamical Fermions

Cited by in corpus (35)

• Light Hadron Masses from Lattice QCD
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Nucleon and $\Delta$ elastic and transition form factors
• Three Lectures on Hadron Physics
• Understanding the nucleon as a Borromean bound-state
• A covariant view on the nucleons' quark core
• Nucleon elastic form factors at accessible large spacelike momenta
• Comparison of gluon flux-tube distributions for quark-diquark and quark-antiquark hadrons
• Diquark effects in light baryon correlators from lattice QCD
• Rare ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ and ${\Lambda }_b\to \Lambda \gamma$ decays in the relativistic quark model
• Relativistic quark-diquark model of baryons with a spin-isospin transition interaction
• Diquark properties from full QCD lattice simulations
• Chiral effective theory of diquarks and the U_A(1) anomaly
• Diquark mass differences from unquenched lattice QCD
• Spectrum of singly heavy baryons from a chiral effective theory of diquarks
• Heavy baryon spectrum with chiral multiplets of scalar and vector diquarks
• Novel pentaquark picture for singly heavy baryons from chiral symmetry
• Baryons and the Borromeo
• Asymptotically conformal CFL quark matter within a nonlocal chiral quark model
• Strong decays of singly heavy baryons from a chiral effective theory of diquarks
• QCD with overlap fermions: Running coupling and the 3-loop beta-function
• Hadron properties from QCD bound-state equations: A status report
• Chiral effective model of cold and dense two-color QCD: The linear sigma model approach
• Structure of the nucleon and its first radial excitation
• Large Wilson loops with overlap and clover fermions: Two-loop evaluation of the b-quark mass shift and the quark-antiquark potential
• Non-perturbative Analysis of Various Mass Generation by Gluonic Dressing Effect with the Schwinger-Dyson Formalism in QCD
• The chiral limit of a fermion-scalar $(1/2{)}^{+}$ system in covariant gauges
• Selected problems of baryons spectroscopy: chiral soliton versus quark models
• Nucleon viewed as a Borromean Bound-State
• Chiral effective theory of scalar and vector diquarks revisited
• Running Masses in the Nucleon and its Resonances
• Isospin breaking from diquark clustering
• Valence-quark structure N* resonances from DSEs
• Flavour decomposition of electromagnetic transition form factors of nucleon resonances
• Strong diquark correlations inside the proton