nCTEQ PDFs at the LHC: Vector Boson Production in Heavy Ion Collisions
- Clark, D.B.
- Godat, E.
- Hobbs, T.J.
- Ježo, T.
- Kent, J.
- Keppel, C.
- Klasen, M.
- Kovařík, K.
- Kusina, A.
- Lyonnet, F.
- Morfin, J.G.
- Olness, F.I.
- Owens, J.F.
- Schienbein, I.
- Yu, J.Y.
DOIAbstract
International audienceExtraction of the strange quark PDF is a long-standing puzzle. Weuse the nCTEQ nPDFs with uncertainties to study the impact of the LHCW/Z production data on both the flavor differentiation and nuclearcorrections; 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 canalso help improve proton PDFs. We introduce a new implementation ofthe nCTEQ code (nCTEQ++) based on C++ which has a modular strucure andenables us to easily integrate programs such as HOPPET, APPLgrid, andMCFM. Using ApplGrids generated from MCFM, we use nCTEQ++ to performa preliminary fit including the p-Pb LHC W/Z ve...
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