Azimuthal and single spin asymmetry in deep-inelastic lepton-nucleon scattering
نویسندگان
چکیده
We derive a general framework for describing semi-inclusive deep-inelastic lepton-nucleon scattering in terms of the unintegrated parton distributions and other higher twist parton correlations. Such a framework provides a consistent approach to the calculation of inclusive and semi-inclusive cross sections including higher twist effects. As an example, we calculate the azimuthal asymmetries to the order of 1/Q in semi-inclusive process with transversely polarized target. A non-vanishing single-spin asymmetry in the “triggered inclusive process” is predicted to be 1/Q suppressed with a part of the coefficient related to a moment of the Sivers function.
منابع مشابه
ar X iv : h ep - p h / 06 10 11 2 v 3 1 4 N ov 2 00 6 Transverse single spin asymmetries in inclusive deep - inelastic scattering
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