Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 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.

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The categories of this paper are: mtrl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: econ
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: chao-dyn
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The categories of this paper are: plasm-ph
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The categories of this paper are: physics
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga