Next to Leading Order Semi-inclusive Spin Asymmetries

Details Next to Leading Order Semi-inclusive Spin Asymmetries Next to Leading Order Semi-inclusive Spin Asymmetries

1996-03-13

arxiv.org/abs/hep-ph/9603302v1

Phys.Lett.B389:358-366,1996

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 14 pages, 6 figures in 4 Postcript files

Scientific paper

10.1016/S0370-2693(96)01257-9

We have computed semi-inclusive spin asymmetries for proton and deuteron targets including next to leading order (NLO) QCD corrections and contributions coming from the target fragmentation region. These corrections have been estimated using NLO fragmentation functions, parton distributions and also a model for spin dependent fracture functions which is proposed here. We have found that NLO corrections are small but non-negligible in a scheme where gluons are polarised and that our estimate for target fragmentation effects does not modify significantly charged asymmetries but affects the so called difference asymmetries.

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