V(us) Determination from Hyperon Semileptonic Decays

Abstract

We analyze the numerical determination of the quark mixing factor V(us) from hyperon semileptonic decays. The discrepancies between the results obtained in two previous studies are clarified. Our fits indicate sizeable SU(3) breaking corrections, which unfortunately can only be fully determined from the data at the first order. The lack of a reliable theoretical calculation of second-order symmetry breaking effects translates into a large systematic uncertainty, which has not been taken into account previously. Our final result, V(us) = 0.226 +/- 0.005, is not competitive with the existing determinations from K(l3), K(l2) and τdecays.

16 pages, no figures. References added and other minor changes

References in corpus (28)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• The 1/N Expansion for Baryons
• Light pseudoscalar decay constants, quark masses, and low energy constants from three-flavor lattice QCD
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• $K_{\ell 3}$ decays in Chiral Perturbation Theory
• Precise Determination of |V{us}| from Lattice Calculations of Pseudoscalar Decay Constants
• Radiative corrections to K_{l3} decays
• V_us and m_s from hadronic tau decays
• The < S P P > Green function and SU(3) breaking in K_{l3} decays
• Baryon Mass Splittings in the 1/N_c Expansion
• SU(3) symmetry breaking in hyperon semileptonic decays
• Flavor Symmetry Breaking in the 1/N Expansion
• Determination of m_s and |V_us| from hadronic tau decays
• The K -> pi vector form factor at zero momentum transfer on the lattice
• Order p^6 chiral couplings from the scalar K Pi form factor
• New, high statistics measurement of the K+ -> pi0 e+ nu (Ke3) branching ratio
• Semileptonic Hyperon Decays and CKM Unitarity
• A Determination of the CKM Parameter |Vus|
• Beta decay of hyperons in a relativistic quark model
• K_l3 form factors at order p^6 in chiral perturbation theory
• Measurement of the branching ratio of the decay KL -> pi e nu and extraction of the CKM parameter |Vus|
• V_{us} from hyperon semileptonic decays
• Chiral Corrections to Hyperon Vector Form Factors
• Radiative corrections to the semileptonic Dalitz plot with angular correlation between polarized decaying hyperons and emitted charged leptons
• Neutron beta decay and the current determination of Vud

Cited by in corpus (39)

• The Physics of the B Factories
• Axion searches with the EDELWEISS-II experiment
• Beta decays as sensitive probes of lepton flavor universality
• Global Effective-Field-Theory analysis of New-Physics effects in (semi)leptonic kaon decays
• Search for Solar Axions Produced in $p(d,{}^3\mathrm{He})\mathrm{A}$ Reaction with Borexino Detector
• Search for 14.4 keV solar axions emitted in the M1-transition of 57Fe nuclei with CAST
• Recent developments in SU(3) covariant baryon chiral perturbation theory
• Lattice study of flavor SU(3) breaking in hyperon beta decay
• $|V_{us}|$ from $K_{\ell 3}$ decay and four-flavor lattice QCD
• Constraints on the axion-electron coupling for solar axions produced by Compton process and bremsstrahlung
• 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
• Predicting the tau strange branching ratios and implications for V_{us}
• Universal Mass Texture, CP violation and Quark-Lepton Complementarity
• Search for Solar Axions Produced by Primakoff Conversion Using Resonant Absorption by ${}^{169}$Tm Nuclei
• 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
• F and D Values with Explicit Flavor Symmetry Breaking and Δs Contents of Nucleons
• Search for Resonant Absorption of Solar Axions Emitted in M1 Transition in ${}^{57}$Fe Nuclei
• Semileptonic hyperon decays in the self-consistent SU(3) chiral quark-soliton model
• Hyperon vector form factor from 2+1 flavor lattice QCD
• 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
• New limits on the resonant absorption of solar axions obtained with a ${}^{169}$Tm-containing cryogenic detector
• Chiral extrapolation and finite-volume dependence of the hyperon vector couplings
• Patterns of flavour symmetry breaking in hadron matrix elements involving u, d and s quarks
• Chiral corrections to the vector and axial couplings of quarks and baryons
• $\Delta$L=2 hyperon decays induced by Majorana neutrinos and doubly-charged scalars
• Strange Mass Corrections to Hyperonic Semi-leptonic Decay in Statistical Model
• Resonant Majorana neutrino effects in $\Delta$L=2 four-body hyperon decays
• Properties of hyperons in chiral perturbation theory
• Chiral extrapolation of hyperon vector form factors
• Performance of TES X-Ray Microcalorimeters Designed for 14.4-keV Solar Axion Search
• Study of vector and axial-vector form factors and the decay parameters for the semileptonic hyperon decays
• Properties of the ground-state baryons in chiral perturbation theory