arXiv:1808.07514·v1·High Energy Physics — Phenomenology
PDF Flavor Determination and the nCTEQ PDFs
nCTEQ Collaboration: E. Godat🇺🇸 · D. B. Clark🇺🇸 · T. J. Hobbs🇺🇸 · T. Jezo🇨🇭 · J. Kent🇺🇸 · C. Keppel🇺🇸 · K. Kovarik🇩🇪 · A. Kusina🇫🇷 · F. Lyonnet🇺🇸 · J.G. Morfin🇺🇸 · F. I. Olness🇺🇸 · J.F. Owens🇺🇸 · I. Schienbein🇫🇷 · J. Y. Yu🇺🇸
Abstract
Recent LHC W/Z vector boson production data in proton-lead collisions are quite sensitive to the heavier flavors (especially the strange PDF), and 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 fit including the LHC W/Z vector boson data.
Comments: 6 pages, 5 figures. DIS2018 Workshop, Kobe, Japan