Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A general formalism for single and double spin asymmetries in inclusive
  hadron production   We present a calculation of single and double spin asymmetries for inclusive
hadron production in hadronic collisions. Our approach is based on Leading
Order (LO) perturbative QCD and generalized factorization theorems, with full
account of intrinsic parton momentum, k_T, effects. This leads to a new class
of spin and k_T-dependent distribution and fragmentation functions. Limiting
ourselves to consider leading twist functions, we show how they could play a
relevant role in producing non-vanishing spin asymmetries.

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The categories of this paper are: gr-qc
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The categories of this paper are: cmp-lg
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The categories of this paper are: nucl-ex
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: q-alg
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The categories of this paper are: funct-an
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The categories of this paper are: alg-geom
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The categories of this paper are: nlin
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: patt-sol
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The categories of this paper are: math-ph