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Intrinsic charm in a matched general-mass scheme. (English) Zbl 1366.81235

Summary: The FONLL general-mass variable-flavour number scheme provides a framework for the matching of a calculation in which a heavy quark is treated as a massless parton to one in which the mass dependence is retained throughout. We describe how the usual formulation of FONLL can be extended in such a way that the heavy quark parton distribution functions are freely parameterized at some initial scale, rather than being generated entirely perturbatively. We specifically consider the case of deep-inelastic scattering, in view of applications to PDF determination, and the possible impact of a fitted charm quark distribution on \(F_2^c\) is assessed.

MSC:

81T18 Feynman diagrams
81T80 Simulation and numerical modelling (quantum field theory) (MSC2010)

Software:

APFEL
PDFBibTeX XMLCite
Full Text: DOI arXiv

References:

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