The First Moment of the Kaon Distribution Amplitude from N_f=2+1 Domain Wall Fermions

Details The First Moment of the Kaon Distribution Amplitude from N_f=2+1 Domain Wall Fermions The First Moment of the Kaon Distribution Amplitude from N_f=2+1 Domain Wall Fermions

2006-10-03

arxiv.org/abs/hep-lat/0610025v1

PoS LAT2006:111,2006

Physics

High Energy Physics

High Energy Physics - Lattice

Talk at Lattice 2006; to be published in Proceedings Of Science as POS(LAT2006)111. 7 pages; 1 figures

Scientific paper

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.

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