Beta decay of hyperons in a relativistic quark model

Abstract

A relativistic constituent quark model is used to calculate the semileptonic beta decay of nucleons and hyperons. The parameters of the model, namely, the constituent quark mass and the confinement scale, are fixed by a previous calculation of the magnetic moments of the baryon octet within the same model. We discuss the momentum dependence of the form factors, possible configuration mixing and SU(3) symmetry breaking. We conclude that the relativistic constituent quark model is a good framework to analyze electroweak properties of the baryons.

RevTeX, 14 pages, SLAC-PUB-6661

References in corpus (5)

• Relativistic Constituent Quark Model of Electroweak Properties of Baryons
• Wavefunction-Independent Relations between the Nucleon Axial-Coupling g_A and the Nucleon Magnetic Moments
• Nucleon Form Factors in a Relativistic Quark Model
• Precise Determinations of the CKM Matrix from CP-Asymmetries in B-Decays and K_L --> π^0 ν\barν
• Chiral Corrections to Hyperon Vector Form Factors

Cited by in corpus (43)

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• V(us) Determination from Hyperon Semileptonic Decays
• Semileptonic Hyperon Decays and CKM Unitarity
• Recent developments in SU(3) covariant baryon chiral perturbation theory
• Lattice study of flavor SU(3) breaking in hyperon beta decay
• V_{us} from hyperon semileptonic decays
• Weak Quasi-elastic Production of Hyperons
• SU(3)-breaking corrections to the hyperon vector coupling $f_1(0)$ in covariant baryon chiral perturbation theory
• Chiral Corrections to the Hyperon Vector Form Factors
• Weak vector and axial-vector form factors in the chiral constituent quark model with configuration mixing
• Hyperon decay form factors in chiral perturbation theory
• Double beta decay of sigma^- hyperons
• Semileptonic hyperon decays in the self-consistent SU(3) chiral quark-soliton model
• Measurement of the branching ratios of the decays Xi0 --> Sigma+ e- nubar and anti-Xi0 --> anti-Sigma+ e+ nu
• Hyperon vector form factor from 2+1 flavor lattice QCD
• Semileptonic decay constants of octet baryons in the chiral quark-soliton model
• Renormalization of the baryon axial vector current in large-N_c chiral perturbation theory: Effects of the decuplet-octet mass difference and flavor symmetry breaking
• Hyperon production from neutrino-nucleon reaction
• Analysis of the $\Sigma -n$ form factors with light-cone QCD sum rules
• SU(3) breaking in hyperon transition vector form factors
• Hyperon semileptonic decays in QCD sum rules
• Chiral Effective Theory Methods and their Application to the Structure of Hadrons from Lattice QCD
• Determination of the Kobayashi-Maskawa-Cabibbo matrix element V_{us} under various flavor-symmetry-breaking models in hyperon semileptonic decays
• Chiral extrapolation and finite-volume dependence of the hyperon vector couplings
• Chiral corrections to the vector and axial couplings of quarks and baryons
• Measurement of the branching ratio of the decay ${\Xi }^0\to {\Sigma }^{+}{\mu }^{-}{\bar{\nu }}_{\mu }$
• Strange Mass Corrections to Hyperonic Semi-leptonic Decay in Statistical Model
• $\Delta$L=2 hyperon decays induced by Majorana neutrinos and doubly-charged scalars
• Hyperon production in quasielastic ${\bar{\nu }}_{\tau }-$nucleon scattering
• Semileptonic Hyperon Decays on the Lattice: an Exploratory Study
• Resonant Majorana neutrino effects in $\Delta$L=2 four-body hyperon decays
• Dependence of Electromagnetic Form Factors of Hadrons on Light Cone Frames
• Effect of isoscalar and isovector scalar fields on baryon semileptonic decays in nuclear matter
• Baryons and baryoniums in the perspective of QCD sum rules
• Second Class Currents, Axial Mass and Nuclear Effects in Hyperon Production
• Measurements of the Absolute Branching Fraction of the Semileptonic Decay ${\mathbf{\Xi }}^{-}\to \mathbf{\Lambda }{\mathbf{e}}^{-}{\bar{\nu }}_{\mathbf{e}}$ and the Axial Charge of the ${\mathbf{\Xi }}^{-}$
• Nucleon matrix elements and baryon masses in the Dirac orbital model
• T-violating effect in ${\nu }_{\tau }({\bar{\nu }}_{\tau })-$nucleon quasielastic scattering
• Study of vector and axial-vector form factors and the decay parameters for the semileptonic hyperon decays