期刊
PHYSICS LETTERS B
卷 754, 期 -, 页码 49-58出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2015.12.077
关键词
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资金
- ERC [291377]
- STFC Consolidated Grant [ST/J000329/1]
- Italian PRIN
- European Investment Bank EIBURS grant
- European Commission through the Higgs Tools Initial Training Network [PITN-GA-2012-316704]
- STFC Rutherford Fellowship [ST/K005227/1, ST/M003787/1]
- European Research Council
- STFC [ST/L000458/1, ST/K005227/1, ST/L000474/1, ST/M003787/1, ST/J000329/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/J000329/1, ST/L000458/1, 1527217, ST/M003787/1, ST/K005227/1, ST/L000474/1] Funding Source: researchfish
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. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.
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