Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Calculating contracted tensor Feynman integrals   A recently derived approach to the tensor reduction of 5-point one-loop
Feynman integrals expresses the tensor coefficients by scalar 1-point to
4-point Feynman integrals completely algebraically. In this letter we derive
extremely compact algebraic expressions for the contractions of the tensor
integrals with external momenta. This is based on sums over signed minors
weighted with scalar products of the external momenta. With these contractions
one can construct the invariant amplitudes of the matrix elements under
consideration, and the evaluation of one-loop contributions to massless and
massive multi-particle production at high energy colliders like LHC and ILC is
expected to be performed very efficiently.

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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: q-alg
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: stat
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The categories of this paper are: cs
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: bayes-an