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arXiv · 1510.00009

Intrinsic charm in a matched general-mass scheme

Richard D. Ball·Valerio Bertone·Marco Bonvini·Stefano Forte·Patrick Groth Merrild·Juan Rojo·Luca Rottoli
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Abstract

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.

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Richard D. Ball, Valerio Bertone, Marco Bonvini, Stefano Forte, Patrick Groth Merrild, Juan Rojo, Luca Rottoli. 2016-01-13. Intrinsic charm in a matched general-mass scheme. https://doi.org/10.1016/j.physletb.2015.12.077

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