Chiral Corrections to the Hyperon Vector Form Factors

Abstract

We present the complete calculation of the SU(3)-breaking corrections to the hyperon vector form factors up to O(p^4) in the Heavy Baryon Chiral Perturbation Theory. Because of the Ademollo-Gatto theorem, at this order the results do not depend on unknown low energy constants and allow to test the convergence of the chiral expansion. We complete and correct previous calculations and find that O(p^3) and O(1/M_0) corrections are important. We also study the inclusion of the decuplet degrees of freedom, showing that in this case the perturbative expansion is jeopardized. These results raise doubts on the reliability of the chiral expansion for hyperons.

20 pages, 4 figures, v2: published version

References in corpus (25)

• Renormalization of relativistic baryon chiral perturbation theory and power counting
• Heavy Baryon Chiral Perturbation Theory with Light Deltas
• Baryon Chiral Perturbation Theory in Manifestly Lorentz Invariant Form
• Chiral expansion of baryon masses and $\sigma$-terms
• Semileptonic Hyperon Decays
• The < S P P > Green function and SU(3) breaking in K_{l3} decays
• SU(3) symmetry breaking in hyperon semileptonic decays
• The K -> pi vector form factor at zero momentum transfer on the lattice
• Including the $\Delta (1232)$ resonance in baryon chiral perturbation theory
• Infrared regularization with spin-3/2 fields
• Semileptonic Hyperon Decays and CKM Unitarity
• V(us) Determination from Hyperon Semileptonic Decays
• Baryon masses and nucleon sigma terms in manifestly Lorentz-invariant baryon chiral perturbation theory
• Beta decay of hyperons in a relativistic quark model
• V_{us} from hyperon semileptonic decays
• Chiral Corrections to Hyperon Vector Form Factors
• First Lattice QCD Study of the Sigma -> n Axial and Vector Form Factors with SU(3) Breaking Corrections
• Isospin Breaking in Neutron $\beta$-decay and SU(3) Violation in Semi-leptonic Hyperon Decays
• Baryon Masses in Chiral Perturbation Theory with Infrared Regularization
• Wave function renormalization in heavy baryon chiral perturbation theory
• Kaon semileptonic decay form factors in two-flavor QCD
• SU(3)-breaking effects in kaon and hyperon semileptonic decays from lattice QCD
• Vus from Kl3 Decays
• Semileptonic Hyperon Decays on the Lattice: an Exploratory Study
• Chiral extrapolation of hyperon vector form factors

Cited by in corpus (29)

• Helicity Analysis of Semileptonic Hyperon Decays Including Lepton Mass Effects
• Semileptonic decays of the light J(P)=1/2(+) ground state baryon octet
• Recent developments in SU(3) covariant baryon chiral perturbation theory
• Lattice study of flavor SU(3) breaking in hyperon beta decay
• Hyperons in Two Flavor Chiral Perturbation Theory
• Hyperon Semileptonic decay constants with flavor SU(3) symmetry breaking
• Tests of non-standard electroweak couplings of right-handed quarks
• First Lattice QCD Study of the Sigma -> n Axial and Vector Form Factors with SU(3) Breaking Corrections
• SU(3)-breaking corrections to the hyperon vector coupling $f_1(0)$ in covariant baryon chiral perturbation theory
• Hyperon decay form factors in chiral perturbation theory
• Semileptonic hyperon decays in the self-consistent SU(3) chiral quark-soliton model
• Testing SU(3) Flavor Symmetry in Semileptonic and Two-body Nonleptonic Decays of Hyperons
• Decuplet contribution to the meson-baryon scattering lengths
• Hyperon vector form factor from 2+1 flavor lattice QCD
• 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
• The baryon vector current in the combined chiral and 1/Nc expansions
• Continuum limit of hyperon vector coupling $f_1(0)$ from 2+1 flavor domain wall QCD
• Hyperon semileptonic decays in QCD sum rules
• SU(3) breaking in hyperon transition vector form factors
• Analysis of the $\Sigma -n$ form factors with light-cone QCD sum rules
• Chiral Effective Theory Methods and their Application to the Structure of Hadrons from Lattice QCD
• Dirac form factors and electric charge radii of baryons in the combined chiral and 1/N_c expansions
• Chiral extrapolation and finite-volume dependence of the hyperon vector couplings
• Chiral corrections to the vector and axial couplings of quarks and baryons
• The Δcontribution to the parity-violating nucleon-nucleon force
• 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