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Contribution of quark-mass-dependent operators to higher twist effects in deep-inelastic scattering
Phys. Rev. D 49, 2242 – Published 1 March, 1994
DOI: https://doi.org/10.1103/PhysRevD.49.2242
Abstract
We look at the contribution of quark-mass-dependent twist-4 operators to the second moments of spin-averaged structure functions and the Bjorken sum rule. Its contribution is non-negligible in the former case due to large Wilson coefficients. We also discuss the values of the twist-4 spin-2 nucleon matrix element within present experimental constraints.
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