Abstract
We present novel results for the first moment of the spin-dependent structure function g 1 (x, Q 2) of the nucleon at “small” (Q 2 < 0.3 GeV2) photon virtuality in the framework of a relativistic formulation of baryon chiral perturbation theory. We perform a next-to-leading order calculation and obtain significant differences to previously found results based on the heavy-baryon approach for the proton and neutron.
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Bernard, V., Hemmert, T.R., Meißner, UG. (2003). Moments of polarized parton distribution functions. In: Elster, C., Speth, J., Walcher, T. (eds) Refereed and selected contributions from International Conference on Quark Nuclear Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-09712-0_86
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DOI: https://doi.org/10.1007/978-3-662-09712-0_86
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