EPPS16 - Bringing nuclear PDFs to the LHC era

TL;DR

EPPS16 presents a comprehensive global analysis of nuclear parton distribution functions incorporating LHC data, highlighting the importance of CMS dijet measurements in constraining nuclear gluon modifications and advancing nPDF precision.

Contribution

This work introduces the first full flavour-dependent nuclear PDFs analysis including LHC data, enhancing the understanding of nuclear effects at high energies.

Findings

CMS dijet data crucial for nuclear gluon shape

LHC data significantly improve nPDF constraints

First full flavour-dependent nPDF analysis with LHC data

Abstract

We report on EPPS16, the first global analysis of nuclear parton distribution functions (nPDFs) to include LHC data. Also for the first time, a full flavour dependence of nPDFs is allowed. While the included Z and W data are found to have insufficient statistics to yield stringent constraints, the CMS 5.02 TeV proton-lead dijet data prove crucial in setting the shape of nuclear gluon modifications. With these and other observables being measured in proton-lead runs, we are experiencing a shift of nPDFs to the LHC precision era.