arXiv · hep-ph/0512161
The relativistic hydrogen atom: a theoretical laboratory for structure functions
Abstract
Thanks to the Dirac equation, the hydrogen-like atom at high $Z$ offers a precise model of relativistic bound state, allowing to test properties of unpolarized and polarized structure functions analogous to the hadronic ones, in particular: Sivers effect, sum rules for the vector, axial, tensor charges and for the magnetic moment, positivity constraints, sea contributions and fracture functions
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X. Artru, K. Benhizia. 2006-01-17. The relativistic hydrogen atom: a theoretical laboratory for structure functions. https://doi.org/10.1142/9789812773272_0017
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