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arXiv · 1509.04022

Doped Parton Distributions

Valerio Bertone·Stefano Carrazza·Juan Rojo
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Abstract

Calculations of high-energy processes involving the production of b-quarks are typically performed in two different ways, the massive four-flavour scheme (4FS) and the massless five-flavour scheme (5FS). For processes where the combination of the 4FS and 5FS results into a matched calculation is technically difficult, it is possible to define a hybrid scheme known as the doped scheme, where above the b-quark threshold the strong coupling runs with $n_f=5$, as in the massless calculation, while the DGLAP splitting functions are those of the $n_f=4$ scheme. In this contribution we present NNPDF3.0 PDF sets in this doped scheme, compare them with the corresponding 4FS and 5FS sets, and discuss their relevance for LHC phenomenology.

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Valerio Bertone, Stefano Carrazza, Juan Rojo. 2015-09-14. Doped Parton Distributions. https://arxiv.org/abs/1509.04022

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