Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Master integrals for the two-loop penguin contribution in non-leptonic
  B-decays   We compute the master integrals that arise in the calculation of the leading
penguin amplitudes in non-leptonic B-decays at two-loop order. The application
of differential equations in a canonical basis enables us to give analytic
results for all master integrals in terms of iterated integrals with rational
weight functions. It is the first application of this method to the case of two
different internal masses.

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The categories of this paper are: astro-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: chao-dyn
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: plasm-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: bayes-an
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The categories of this paper are: mtrl-th
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The categories of this paper are: nlin
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat