1. Gluonic contributions to semi-inclusive DIS in the target fragmentation region
- Author
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Kai-Bao Chen, Jian-Ping Ma, and Xuan-Bo Tong
- Subjects
Deep Inelastic Scattering or Small-x Physics ,Factorization ,Renormalization Group ,Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Abstract We study one-loop contributions to semi-inclusive deep inelastic scattering in the target fragmentation region for a polarized lepton beam and nucleon target. Complete one-loop results at leading twist are derived, with a particular focus on the gluonic channel. It shows that four structure functions are generated uniquely by the gluon fracture functions starting at one-loop. Additionally, we obtain two structure functions associated with the longitudinal polarization of the virtual photon, and they are contributed by both gluon and quark channels. By combining existing twist-3 results, all eighteen structure functions for the studied process are predicted in terms of fracture functions convoluted with perturbative coefficient functions.
- Published
- 2024
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