A general formalism for single and double spin asymmetries in inclusive hadron production

Cagliari; F. Murgia (University; INFN; Italy); S. Melis; U. D'Alesio

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A general formalism for single and double spin asymmetries in inclusive hadron production

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arxiv hep-ph/0412231 v1 pith:WAONHQZV submitted 2004-12-16 hep-ph

U. D'Alesio , S. Melis , F. Murgia (University , INFN , Cagliari , Italy) This is my paper

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keywords spinasymmetriesdoublefunctionshadroninclusiveleadingproduction

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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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