Epps16 ⇓ first nuclear pdfs to include lhc data

K.J. Eskola, Petja Paakkinen, Hannu Tuomas Paukkunen, C.A. Salgado

Research output: Contribution to journalConference articleScientificpeer-review

Abstract

We present results of our recent EPPS16 global analysis of NLO nuclear parton distribution functions (nPDFs). For the first time, dijet and heavy gauge boson production data from LHC proton–lead collisions have been included in a global fit. Especially, the CMS dijets play an important role in constraining the nuclear effects in gluon distributions. With the inclusion of also neutrino–nucleus deeply-inelastic scattering and pion–nucleus Drell–Yan data and a proper treatment of isospin-corrected data, we were able to free the flavor dependence of the valence and sea quark nuclear modifications for the first time. This gives us less biased, yet larger, flavor by flavor uncertainty estimates. The EPPS16 analysis indicates no tension between the data sets used, which supports the validity of collinear factorization and universal nPDFs for nuclear hard-collision processes in the kinematical range studied. © Copyright owned by the author(s).
Original languageEnglish
Article number180
JournalPoS Proceedings of Science
Volume314
Number of pages5
ISSN1824-8039
Publication statusPublished - 2017
MoE publication typeA4 Article in conference proceedings
EventEuropean Physical Society Conference on High Energy Physics - Venice, Italy
Duration: 5 Jul 201712 Jul 2017
http://eps-hep2017.eu/

Fields of Science

  • Bosons
  • Distribution functions
  • Inelastic scattering, Deeply inelastic scatterings
  • Global analysis
  • Lead collisions
  • Nuclear effects
  • Nuclear modification
  • Nuclear parton distribution functions
  • Production data
  • Uncertainty estimates, Uncertainty analysis
  • 114 Physical sciences

Cite this

Eskola, K. J., Paakkinen, P., Paukkunen, H. T., & Salgado, C. A. (2017). Epps16 ⇓ first nuclear pdfs to include lhc data. PoS Proceedings of Science, 314, [180].