arxiv ref: 1406.5539Title: A first unbiased global determination of polarized PDFs and their uncertaintiesAuthors: E. R.Nocera, R. D.Ball, S. Forte, G. Ridolfi, J. RojoNode: DFTTOSupervisor: ForteWork Packages: WP3: ToolsMilestones: M3.3.3 Improved PDFs using LHC data