Extraction of the strange quark PDF is a long-standing puzzle. We use the nCTEQ nPDFs with uncertainties to study the impact of the LHC W/Z production data on both the flavor differentiation and nuclear corrections; this complements the information from neutrino-DIS data. As the proton flavor determination is dependent on nuclear corrections (from heavy target DIS, for example), LHC heavy ion measurements can also help improve proton PDFs. We introduce a new implementation of the nCTEQ code (nCTEQ++) based on C++ which has a modular strucure and enables us to easily integrate programs such as HOPPET, APPLgrid, and MCFM. Using ApplGrids generated from MCFM, we use nCTEQ++ to perform a preliminary fit including the pPb LHC W/Z vector boson data.
@article{arxiv.1909.00452,
title = {nCTEQ PDFs at the LHC: Vector boson production in heavy ion collisions},
author = {The nCTEQ Collaboration and D. B. Clark and E. Godat and T. J. Hobbs and T. Ježo and J. Kent and C. Keppel and M. Klasen and K. Kovarík and A. Kusina and F. Lyonnet and J. G. Morfin and F. I. Olness and J. F. Owens and I. Schienbein and J. Y. Yu},
journal= {arXiv preprint arXiv:1909.00452},
year = {2019}
}