An Alternative Approach to Semi-inclusive Dis and a Model Independent Determination of D
نویسنده
چکیده
We discuss how to extract the polarized parton densities and fragmentation functions in a model independent way from SIDIS, and present results for D + u,d,s. There are two types of processes that give information on polarized parton densities in nucleon. The polarized asymmetry in DIS of longitudinally polarized leptons on longitudinally polarized nucleons: ∆A N = 2y(2− y) 1 + (1− y) ∆σ N σ N = ∑ q,q̄ e 2 q ∆qi(x,Q )
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