Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Kaon Weak Matrix Elements with Wilson Fermions   We present results of several numerical studies with Wilson fermions relevant
for kaon physics. We compute the B_K parameter by using two different methods
and extrapolate to the continuum limit. Our preliminary result is B_K(2
GeV)=0.66(7). Delta I=3/2 K->pi pi matrix elements are obtained by using the
next-to-leading order expressions derived in chiral perturbation theory in
which the low energy constants are determined by the lattice results computed
at unphysical kinematics. From the simulation at beta=6.0 our (preliminary)
results read: <pi pi|O_7(2 GeV)|K>_{I=2}=0.14(1)(1) GeV^3 and <pi
pi|O_8(2GeV)|K>_{I=2}=0.69(6)(6) GeV^3.

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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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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: physics
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: bayes-an
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph