Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relations for Massive Spinors   Recently introduced massive spinors are written as 2-vectors consisting of
two massless spinors with opposite helicities. With this notation a couple of
relations between them can be derived easily, entirely avoiding the spinor
indices. The high energy limit of three point amplitudes is discussed shortly.
Finally we add some comments on recursion relations with massive particles.

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The categories of this paper are: hep-lat
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The categories of this paper are: q-bio
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The categories of this paper are: stat
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: alg-geom
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The categories of this paper are: astro-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: dg-ga