Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Lattice Results for Vector Meson Couplings and Parton Distribution
  Amplitudes   We present results for the couplings of light vector mesons to vector and
tensor currents and on the low moments of the light-cone distribution
amplitudes of the pion and kaon. The calculations are performed on the RBC and
UKQCD collaborations' ensembles generated with the Iwasaki gauge action and
with 2+1 flavours of domain wall fermions. The (preliminary) results for the
ratios of the couplings of the vector meson to the vector and tensor currents
(f_V and f^T_V respectively) in the MSbar scheme at 2GeV are:
f_\rho^T/f_\rho=0.681(20); f_{K^\ast}^T/f_{K^\ast}=0.712(11) and
f_\phi^T/f_\phi=0.751(9). For the first moment of the kaon's distribution
amplitude we find (in the same scheme and at the same scale) <xi>_K=0.029(2)
and for the second moment <xi^2>_\pi=0.28(3) and <xi^2>_K=0.27(2).

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The categories of this paper are: ao-sci
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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: gr-qc
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The categories of this paper are: atom-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: dg-ga
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The categories of this paper are: nucl-ex
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The categories of this paper are: solv-int
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: math