Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutral Kaon Mixing Beyond the Standard Model from 2+1 Flavour Domain
  Wall QCD   We present preliminary results of a study of Delta S = 2 matrix elements
originating from physics beyond the Standard Model. Using 2+1 flavour Domain
Wall Fermions we obtain the non-perturbative renormalisation (mixing) matrix in
the RI scheme. We also discuss plans for the chiral extrapolation of the
renormalised matrix elements in a partially quenched set-up.

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The categories of this paper are: funct-an
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The categories of this paper are: nucl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: q-bio
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The categories of this paper are: math
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The categories of this paper are: ao-sci
3
The categories of this paper are: physics
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The categories of this paper are: supr-con
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: q-alg