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arXiv · 2609.37152

Impact of Open Heavy-Flavour Production on nCTEQ Nuclear PDFs

Jan Wissmann·Tomáš Ježo·Michael Klasen·Ingo Schienbein·Hubert Spiesberger
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Abstract

We present nCTEQ26OHF, a global analysis of nuclear parton distribution functions (nPDFs) within the nCTEQ framework. In this analysis, constrasting the main nCTEQ26 release, we replace the Crystal-Ball function, an effective matrix element that is used in nCTEQ26 for open heavy-flavor (OHF) and quarkonium production, by an SACOT GM-VFNS calculation for the OHF predictions. The resulting nCTEQ26OHF PDFs are compatible with the nCTEQ26 PDFs within uncertainties, implying that the OHF data alone provide ample constraint.

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Jan Wissmann, Tomáš Ježo, Michael Klasen, Ingo Schienbein, Hubert Spiesberger. 2026-09-29. Impact of Open Heavy-Flavour Production on nCTEQ Nuclear PDFs. https://arxiv.org/abs/2609.37152

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