Chiral corrections to the vector and axial couplings of quarks and baryons

Abstract

We calculate chiral corrections to the semileptonic vector and axial quark coupling constants using a manifestly Lorentz covariant chiral quark approach up to order O(p4) in the two- and tree-flavor picture. These couplings are then used in the evaluation of the corresponding couplings which govern the semileptonic transitions between octet baryon states. In the calculation of baryon matrix elements we use a general ansatz for the spatial form of the quark wave function, without referring to a specific realization of hadronization and confinement of quarks in baryons. Matching the physical amplitudes calculated within our approach to the model-independent predictions of baryon chiral perturbation theory (ChPT) allows one to deduce the connection between our parameters and those of baryon ChPT.

arXiv comment28 pages, 4 figures

References in corpus (65)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Pion-nucleon scattering in chiral perturbation theory I: Isospin-symmetric case
• Chiral Perturbation Theory and Baryon Properties
• Baryon Chiral Perturbation Theory in Manifestly Lorentz Invariant Form
• Chiral expansion of baryon masses and $\sigma$-terms
• Low energy analysis of the nucleon electromagnetic form factors
• Heavy Baryon Transitions in a Relativistic Three-Quark Model
• Pion-nucleon scattering inside the Mandelstam triangle
• Semileptonic Hyperon Decays
• Magnetic moments of heavy baryons in the relativistic three-quark model
• Pion--Nucleon Scattering in a New Approach to Chiral Perturbation Theory
• Low energy analysis of pi N --> pi N
• Strong and Radiative Decays of Heavy Flavored Baryons
• Baryon form factors in chiral perturbation theory
• Exclusive Nonleptonic Decays of Bottom and Charm Baryons in a Relativistic Three-Quark Model: Evaluation of Nonfactorizing Diagrams
• SU(3) symmetry breaking in hyperon semileptonic decays
• Flavor Symmetry Breaking in the 1/N Expansion
• Electromagnetic form factors of nucleons in a relativistic three-quark model
• Axial, induced pseudoscalar, and pion-nucleon form factors in manifestly Lorentz-invariant chiral perturbation theory
• Quark mass dependence of the nucleon axial-vector coupling constant
• Sigma-term physics in the perturbative chiral quark model
• Strange nucleon form factors in the perturbative chiral quark model
• Infrared regularization of baryon chiral perturbation theory reformulated
• Semileptonic decays of double heavy baryons
• SU(3) Breaking in Neutral Current Axial Matrix Elements and the Spin Content of the Nucleon
• Electromagnetic form factors of the nucleon in chiral perturbation theory including vector mesons
• Light baryon magnetic moments and N -> Delta gamma transition in a Lorentz covariant chiral quark approach
• The nucleon axial-vector coupling beyond one loop
• Semileptonic Hyperon Decays and CKM Unitarity
• V(us) Determination from Hyperon Semileptonic Decays
• Electromagnetic Structure of the Nucleon in the Perturbative Chiral Quark Model
• Chiral Quark Model of Nucleon Spin-Flavor Structure with SU(3) and Axial-U(1) Breakings
• SU(3) Breaking Effects in Hyperon Semi-Leptonic Decays and the extraction of F and D
• Beta decay of hyperons in a relativistic quark model
• Possible evidence of extended objects inside the proton
• Nucleon spin-flavor structure in SU(3) breaking chiral quark model
• piN scattering and electromagnetic corrections in the perturbative chiral quark model
• Baryon masses, chiral extrapolations, and all that
• Chiral extrapolation of g_A with explicit Delta(1232) degrees of freedom
• One-Photon Transitions between Heavy Baryons in a Relativistic Three-Quark Model
• V_{us} from hyperon semileptonic decays
• Updated analysis of meson-nucleon sigma terms in the perturbative chiral quark model
• Chiral Corrections to Hyperon Vector Form Factors
• Isospin Breaking in Neutron $\beta$-decay and SU(3) Violation in Semi-leptonic Hyperon Decays
• SU(3) Breaking in Hyperon Beta Decays: a Prediction for Xi^0 -> Sigma^+ e nu-bar
• Chiral Corrections to the Hyperon Vector Form Factors
• On the choice of heavy baryon currents in the relativistic three-quark model
• Field Redefinitions and Wave Function Renormalization to $O(p^4)$ in Heavy Baryon Chiral Perturbation Theory
• Hyperon decay form factors in chiral perturbation theory
• Reanalysis of hyperon beta decay data on $F/D$
• F and D Values with Explicit Flavor Symmetry Breaking and Δs Contents of Nucleons
• Baryon Magnetic Moments and Axial Coupling Constants with Relativistic and Exchange Current Effects
• Axial form factor of the nucleon in the perturbative chiral quark model
• Hyperon semileptonic decays and quark spin content of the proton
• Structure of the nucleon in chiral perturbation theory
• Renormalization of the baryon axial vector current in large-N_c chiral perturbation theory
• One-Pion Charm Baryon Transitions in a Relativistic Three-Quark Model
• Possible evidence of extended objects inside the proton
• Lambda_b and Lambda_c baryon decays at finite values of heavy quark masses
• Semileptonic decays of baryons in a relativistic quark model
• F/D Ratios in Hyperon Beta Decays and Spin Distribution in the Nucleon
• Determination of the Kobayashi-Maskawa-Cabibbo matrix element V_{us} under various flavor-symmetry-breaking models in hyperon semileptonic decays
• Dependence of nucleon properties on pseudoscalar meson masses
• Chiral Dynamics of Baryons in a Lorentz Covariant Quark Model

Cited by in corpus (8)

• Semileptonic decays of the light J(P)=1/2(+) ground state baryon octet
• Weak vector and axial-vector form factors in the chiral constituent quark model with configuration mixing
• Update on strong and radiative decays of the $D_{s0}^{\ast }(2317)$ and $D_{s1}(2460)$ and their bottom cousins
• 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
• 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
• Deuteron EDM induced by CP violating couplings of pseudoscalar mesons
• Axial transition form factors of octet baryons in the perturbative chiral quark model