First lattice QCD study of the Σ- → n axial and vector form factors with SU (3) breaking corrections

@article{Guadagnoli2007FirstLQ,
  title={First lattice QCD study of the Σ- → n axial and vector form factors with SU (3) breaking corrections},
  author={D. Guadagnoli and V. Lubicz and M. Papinutto and S. Simula},
  journal={Nuclear Physics},
  year={2007},
  volume={761},
  pages={63-91}
}
  • D. Guadagnoli, V. Lubicz, +1 author S. Simula
  • Published 2007
  • Physics
  • Nuclear Physics
  • Abstract We present the first quenched lattice QCD study of the form factors relevant for the hyperon semileptonic decay Σ − → n l ν . The momentum dependence of both axial and vector form factors is investigated and the values of all the form factors at zero-momentum transfer are presented. Following the same strategy already applied to the decay K 0 → π − l ν , the SU ( 3 ) -breaking corrections to the vector form factor at zero-momentum transfer, f 1 ( 0 ) , are determined with great… CONTINUE READING

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