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arXiv · 1505.03217

Twist-3 Contributions in Semi-Inclusive DIS with Transversely Polarized Target

A. P. Chen·J. P. Ma·G. P. Zhang
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Abstract

We study semi-inclusive DIS with a transversely polarized target in the approach of collinear factorization. The effects related with the transverse polarization are at twist-3. We derive the complete result of twist-3 contributions to the relevant hadronic tensor at leading order of $α_s$, and construct correspondingly experimental observables. Measuring these observables will help to extract the twist-2 transversity distribution, twist-3 distributions and twist-3 fragmentation functions of the produced unpolarized hadron. A detailed comparison with the approach of transverse-momentum-dependent factorization is made.

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A. P. Chen, J. P. Ma, G. P. Zhang. 2016-02-02. Twist-3 Contributions in Semi-Inclusive DIS with Transversely Polarized Target. https://doi.org/10.1016/j.physletb.2015.10.085

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