We study the impact of new open charm muoproduction data from COMPASS and preliminary W production data from STAR on NNPDFpol1.0, the first unbiased set of polarized parton distributions recently delivered by the NNPDF Collaboration and based on inclusive Deep-Inelastic Scattering data only. The information contained in the new data sets is incorporated in our Monte Carlo parton determination via Bayesian reweighting, a method based on statistical inference which avoids the need for a global refitting. We explicitly show to which extent COMPASS and STAR data can improve our knowledge of gluon and antiquark polarized parton distributions respectively.
Constraints on polarized parton distributions from open charm and W production data / E. Nocera. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - 2013:(2013 Jun 29), pp. 211.1-211.6. (Intervento presentato al 21. convegno International workshop on deep-inelastic scattering and related subjects (DIS) tenutosi a Marseilles nel 2013).
Constraints on polarized parton distributions from open charm and W production data
E. Nocera
2013
Abstract
We study the impact of new open charm muoproduction data from COMPASS and preliminary W production data from STAR on NNPDFpol1.0, the first unbiased set of polarized parton distributions recently delivered by the NNPDF Collaboration and based on inclusive Deep-Inelastic Scattering data only. The information contained in the new data sets is incorporated in our Monte Carlo parton determination via Bayesian reweighting, a method based on statistical inference which avoids the need for a global refitting. We explicitly show to which extent COMPASS and STAR data can improve our knowledge of gluon and antiquark polarized parton distributions respectively.
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