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Unbiased global determination of parton distributions and their uncertainties at NNLO and at LO

Abstract:

We present a determination of the parton distributions of the nucleon from a global set of hard scattering data using the NNPDF methodology at LO and NNLO in perturbative QCD, thereby generalizing to these orders the NNPDF2.1 NLO parton set. Heavy quark masses are included using the so-called FONLL method, which is benchmarked here at NNLO. We demonstrate the stability of PDFs upon inclusion of NNLO corrections, and we investigate the convergence of the perturbative expansion by comparing LO,...

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Authors


Bertone, V More by this author
Cerutti, F More by this author
Del Debbio, L More by this author
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Journal:
Nuclear Physics B
Volume:
855
Issue:
2
Pages:
153-221
Publication date:
2012-02-11
DOI:
ISSN:
0550-3213
URN:
uuid:459e417c-e46d-4a6b-9d16-d61b3481b8fd
Source identifiers:
477516
Local pid:
pubs:477516
Language:
English

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