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Volume 316 - XXVI International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2018) - WG1: Structure Functions and Parton Densities
PDF Flavor Determination and the nCTEQ15 PDFs: W ± / Z vector boson production in heavy ion collisions
The 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. Olness,* J.F. Owens, I. Schienbein, J.Y. Yu
*corresponding author
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Pre-published on: 2018 September 20
Published on: 2018 November 23
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 p-Pb LHC W/Z vector boson data.
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