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Azimuthal and single spin asymmetry in deep-inelastic lepton-nucleon scattering

Zuo-tang Liang·Xin-Nian Wang
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Abstract

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.

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Zuo-tang Liang, Xin-Nian Wang. 2007-05-03. Azimuthal and single spin asymmetry in deep-inelastic lepton-nucleon scattering. https://doi.org/10.1103/physrevd.75.094002

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