6533b822fe1ef96bd127ced1
RESEARCH PRODUCT
The EPPS16 nuclear PDFs
K. J. EskolaP. PaakkinenH. PaukkunenCarlos A. Salgadosubject
Drell-Yan processHeavy-quarkHigh Energy Physics::LatticeNuclear TheoryHigh Energy Physics::PhenomenologyElementary particlesFOS: Physical sciencesSea quarks Inelastic scatteringHigh-energy collisions114 Physical sciencesHigh Energy Physics - ExperimentHigh Energy Physics - PhenomenologyHigh Energy Physics - Experiment (hep-ex)nuclear PDFsHigh Energy Physics - Phenomenology (hep-ph)Lead Deeply inelastic scatteringsLeadInelastic ScatteringHeavy nucleusHigh Energy Physics::ExperimentNuclear modificationHigh energy physicsNuclear ExperimentPartonsNucleonsdescription
We report on EPPS16 - the first analysis of NLO nuclear PDFs where LHC p-Pb data (Z, W, dijets) have been directly used as a constraint. In comparison to our previous fit EPS09, also data from neutrino-nucleus deeply-inelastic scattering and pion-nucleus Drell-Yan process are now included. Much of the theory framework has also been updated from EPS09, including a consistent treatment of heavy quarks in deeply-inelastic scattering. However, the most notable change is that we no longer assume flavour-blind nuclear modifications for valence and sea quarks. This significantly reduces the theoretical bias. All the analysed data are well reproduced and the analysis thereby supports the validity of collinear factorization in high-energy collisions involving heavy nuclei. However, flavour by flavour, the uncertainties are still rather large.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-09-25 |