Extended Data Fig. 1: Evaluation of the charm PDF in the 3FNS. | Nature

Extended Data Fig. 1: Evaluation of the charm PDF in the 3FNS.

From: Evidence for intrinsic charm quarks in the proton

Extended Data Fig. 1

The 4FNS charm PDF is parametrized at Q0 and evolved to all Q, where it is constrained by the NNPDF4.0 global dataset. Subsequently, it is transformed to the 3FNS where (if nonzero) it provides the intrinsic charm component.

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