Semileptonic decays of d mesons in three-flavor lattice QCD.

  title={Semileptonic decays of d mesons in three-flavor lattice QCD.},
  author={Christopher Aubin and C. Bernard and Carleton DeTar and Moneika Dipierro and Aida X. El-Khadra and Steven Gottlieb and E. B. Gregory and Urs M. Heller and JamesE. Hetrick and Andreas S. Kronfeld and Paul MacKenzie and Damian P. Menscher and Maggie Nobes and Masakuni Okamoto and Mehmet Buǧrahan Oktay and James Dale Osborn and Jim Simone and Robert Sugar and Doug Toussaint and Howard Trottier},
  journal={Physical review letters},
  volume={94 1},
We present the first three-flavor lattice QCD calculations for D-->pilnu and D-->Klnu semileptonic decays. Simulations are carried out using ensembles of unquenched gauge fields generated by the MILC Collaboration. With an improved staggered action for light quarks, we are able to simulate at light quark masses down to 1/8 of the strange mass. Consequently, the systematic error from the chiral extrapolation is much smaller than in previous calculations with Wilson-type light quarks. Our results… CONTINUE READING

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