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arXiv · 2512.11569

Heavy-quark contributions to the DIS structure functions $F_4$ and $F_5$ at NLO in the ACOT scheme

Edoardo Spezzano·Tomas Jezo·Michael Klasen·Peter Risse·Ingo Schienbein
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Abstract

We compute the contributions of heavy quarks to the deep-inelastic scattering structure functions $F_4$ and $F_5$ at next-to-leading order of perturbative QCD in the ACOT scheme. Both analytic results including the details of the calculation as well as numerical results for the neutral and charged current cases are presented. Our study thus lays the groundwork for future measurements of these two structure functions in experiments such as the SHiP experiment.

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Edoardo Spezzano, Tomas Jezo, Michael Klasen, Peter Risse, Ingo Schienbein. 2025-12-12. Heavy-quark contributions to the DIS structure functions $F_4$ and $F_5$ at NLO in the ACOT scheme. https://arxiv.org/abs/2512.11569

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