SU(3)-breaking corrections to the hyperon vector coupling $f_1(0)$ in covariant baryon chiral perturbation theory

Abstract

We calculate the SU(3)-breaking corrections to the hyperon vector coupling $f_1(0)$ up to $\mathcal{O}(p^4)$ in covariant baryon chiral perturbation theory with dynamical octet and decuplet contributions. We find that the decuplet contributions are of similar or even larger size than the octet ones. Combining both, we predict positive SU(3)-breaking corrections to all the four independent $f_1(0)$'s (assuming isospin symmetry), which are consistent, within uncertainties, with the latest results form large $N_c$ fits, chiral quark models, and quenched lattice QCD calculations.

13 pages, 5 figures

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Cited by in corpus (30)

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• Prospects for rare and forbidden hyperon decays at BESIII
• Electromagnetic structure of the lowest-lying decuplet resonances in covariant chiral perturbation theory
• Recent developments in SU(3) covariant baryon chiral perturbation theory
• Leading order relativistic hyperon-nucleon interactions in chiral effective field theory
• Global Fit of Modified Quark Couplings to EW Gauge Bosons and Vector-Like Quarks in Light of the Cabibbo Angle Anomaly
• Magnetic moments of the spin-1/2 doubly charmed baryons in covariant baryon chiral perturbation theory
• Weak Kaon Production off the Nucleon
• Covariant chiral nucleon-nucleon contact Lagrangian up to order $\mathcal{O}(q^4)$
• Strangeness $S=-1$ hyperon-nucleon scattering in covariant chiral effective field theory
• Magnetic moments of the spin-1/2 singly charmed baryons in covariant baryon chiral perturbation theory
• Hyperon vector form factor from 2+1 flavor lattice QCD
• Pion photoproduction off nucleons in covariant chiral perturbation theory
• $\Delta (1232)$ resonance in the $\vec{\gamma }p\to p{\pi }^0$ reaction at threshold
• Hyperon semileptonic decays in QCD sum rules
• Systematic study of octet-baryon electromagnetic form factors in covariant chiral perturbation theory
• Continuum limit of hyperon vector coupling $f_1(0)$ from 2+1 flavor domain wall QCD
• The baryon vector current in the combined chiral and 1/Nc expansions
• SU(3) breaking in hyperon transition vector form factors
• Light quark mass dependence of the $D$ and $D_s$ decay constants
• Chiral extrapolation and finite-volume dependence of the hyperon vector couplings
• The lowest-lying spin-1/2 and spin-3/2 baryon magnetic moments in chiral perturbation theory
• Properties of hyperons in chiral perturbation theory
• Sum rules for leading vector form factors in hyperon semileptonic decays
• Baryons and baryoniums in the perspective of QCD sum rules
• Properties of the ground-state baryons in chiral perturbation theory
• Threshold Neutral Pion Photoproduction on the Proton