A lattice study of the spin structure of the Lambda hyperon

Abstract

The internal spin structure of the Lambda is of special importance for the understanding of the spin structure of hadrons in general. The comparison between the nucleon and Lambda allows for a test of the relevant flavour-symmetry breaking effects. Using nonperturbatively O(a) improved Wilson fermions in the quenched approximation we have calculated the first moments of the unpolarised, longitudinally polarised and transversity quark distribution functions in the Lambda. The results indicate that flavour symmetry breaking has little effect on the internal spin structure, in accordance with model based expectations.

14 pages, 2 figures

References in corpus (14)

• Renormalisation and off-shell improvement in lattice perturbation theory
• Order a improved renormalization constants
• The Flavor and Spin Structure of Hyperons from Quark Fragmentation
• Measurement of Longitudinal Spin Transfer to Lambda Hyperons in Deep-Inelastic Lepton Scattering
• Measurement of the Antilambda Polarization in nu_mu Charged Current Interactions in the NOMAD Experiment
• Expected Polarization of $\Lambda$ particles produced in deep inelastic polarized lepton scattering
• Helicity and Transversity Distribution of Nucleon and $\Lambda$-Hyperon from $\Lambda$ Fragmentation
• Quark Distributions of Octet Baryons from SU(3) Symmetry
• Lambda Polarization in Polarized Proton-Proton Collisions at RHIC
• Nucleon Spin with and without Hyperon Data: A New Tool for Analysis
• The Quark-Antiquark Asymmetry of the Nucleon Sea from $\Lambda$ and $\bar{\Lambda }$ Fragmentation
• Progress towards a lattice determination of (moments of) nucleon structure functions
• Hadron Structure Functions within a Chiral Quark Model
• The spin structure of the Lambda hyperon in quenched lattice QCD

Cited by in corpus (16)

• Strangeness Contribution to the Proton Spin from Lattice QCD
• Unquenched quark model for baryons: magnetic moments, spins and orbital angular momenta
• Twist-two matrix elements at finite and infinite volume
• A Feynman-Hellmann approach to the spin structure of hadrons
• Measurement of the Longitudinal Spin Transfer to Lambda and Anti-Lambda Hyperons in Polarised Muon DIS
• Strange Baryon Electromagnetic Form Factors and SU(3) Flavor Symmetry Breaking
• Longitudinal Spin Transfer to the $\Lambda$ Hyperon in Semi-Inclusive Deep-Inelastic Scattering
• Hyperon--anti-hyperon polarization asymmetry in relativistic heavy-ion collisions as an interplay between chiral and helical vortical effects
• Basis light-front quantization approach to $\Lambda$ and ${\Lambda }_c$ and their isospin triplet baryons
• Investigating Local Parity Violation in Heavy-Ion Collisions Using Lambda Helicity
• Spin Content of Lambda in QCD Sum Rules
• Detailed Balance and Spin Content of Λ using Statistical Model
• Kinked tracks from ${\Sigma }^{+}$ baryons as a probe of light quark polarizations
• Event-by-event correlations between $\Lambda$ ($\bar{\Lambda }$) hyperon global polarization and handedness with charged hadron azimuthal separation in Au+Au collisions at $\sqrt{s_{\text{NN}}}=27\text{ GeV}$ from STAR
• Baryons from the lattice: past, present and future
• Mass Suppression in Octet Baryon Production