The First Moment of the Kaon Distribution Amplitude from N_f=2+1 Domain   Wall Fermions
  We present a lattice computation of the first moment of the kaon's leading-twist distribution amplitude. We use ensembles with 2+1 dynamical flavours of domain wall fermions and the Iwasaki gauge action from the RBC and UKQCD joint dataset. We observe the expected chiral behaviour and obtain <\xi>(2GeV)=3/5a_K^1(2GeV)=0.032(3), which agrees very well with other results obtained using QCD sum-rules and the recent lattice result from the UKQCD/QCDSF collaboration. 
P.A. Boyle, M.A. Donnellan, J.M. Flynn, A. Juttner, J. Noaki, C.T.   Sachrajda, R.J. Tweedie