Low-lying Lambda Baryons from the Lattice

Abstract

In a lattice QCD calculation with two light dynamical Chirally Improved (CI) quarks we determine ground state and some excited state masses in all four Lambda baryon channels 1/2^\pm and 3/2^\pm. We perform an infinite volume extrapolation and confirm the widely discussed Lambda(1405). We also analyze the amount of octet-singlet mixing, which is helpful in comparing states with the quark model.

6 pages, 6 figures, accepted for publication in PRD

References in corpus (4)

• Ab-initio Determination of Light Hadron Masses
• Quark-Model Identification of Baryon Ground and Resonant States
• Chiral Properties of Baryon Fields with Flavor SU(3) Symmetry
• Review of lattice studies of resonances

Cited by in corpus (32)

• Baryons as relativistic three-quark bound states
• Lattice QCD Evidence that the Lambda(1405) Resonance is an Antikaon-Nucleon Molecule
• The Flavor Structure of the Excited Baryon Spectra from Lattice QCD
• QCD with Two Light Dynamical Chirally Improved Quarks: Baryons
• Scattering in the pion-nucleon negative parity channel in lattice QCD
• QCD and the Strange Baryon Spectrum
• Structure of the $\mathbf{\Lambda }(1405)$ from Hamiltonian effective field theory
• Structure and Flow of the Nucleon Eigenstates in Lattice QCD
• Novel approaches in Hadron Spectroscopy
• Hidden charm pentaquarks: mass spectrum, magnetic moments, and photocouplings
• The pole structure of the Lambda(1405) in a recent QCD simulation
• Two-pole nature of the $\Lambda (1405)$ from lattice QCD
• Lattice QCD study of $\pi \Sigma -\bar{K}N$ scattering and the $\Lambda (1405)$ resonance
• Light-quark contributions to the magnetic form factor of the Lambda(1405)
• ${\Lambda }_b\to {\Lambda }^{\ast }(1520){\ell }^{+}{\ell }^{-}$ form factors from lattice QCD
• Antineutrino induced Lambda(1405) production off the proton
• Understanding the Nature of $\Lambda (1405)$ through Regge Physics
• New insights into the nature of the $\Lambda (1380)$ and $\Lambda (1405)$ resonances away from the SU(3) limit
• Parity-expanded variational analysis for non-zero momentum
• Flavor structure of $\Lambda$ baryons from lattice QCD: From strange to charm quarks
• Low energy reactions $K^{-}p\to {\Sigma }^0{\pi }^0$, $\Lambda {\pi }^0$, ${\bar{K}}^{0}n$ and the strangeness $S=-1$ hyperons
• Charm-baryon semileptonic decays and the strange ${\Lambda }^{\ast }$ resonances: New insights from lattice QCD
• Structure of the $\mathbf{\Lambda }(1670)$ resonance
• Pole trajectories of the $\Lambda (1405)$ helps establish its dynamical nature
• Effect of particle size distribution on polydisperse hard disks
• Low energy reaction $K^{-}p\to \Lambda \eta$ and the negative parity $\Lambda$ resonances
• The odd-parity strange baryons $\Sigma ({\frac{1}{2}}^{-})$ below 1.8 GeV with Hamiltonian effective field theory
• Amplitude analysis of $\bar{K}N$ scattering
• Chirally motivated $\pi \Sigma$-$\bar{K}N$ model in a finite volume
• On the Structure of the Lambda 1405
• Electromagnetic Form Factors for the $\Lambda$(1405)
• The $\Lambda (1405)$ resonance as a genuine three-quark or molecular state