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nCTEQ PDFs and the strange PDF at LHC - Vector boson production in heavy ion collisions


Olness, Fred; Clark, D Benjamin; Godat, Eric; Hobbs, Timothy J; Jezo, Tomas; Kent, Jesse; Keppel, Cynthia; Klasen, Michael; Kovarik, Karol; Kusina, Aleksander; Lyonnet, Florian; Morfin, Jorge G; Owens, Joseph Francis; Schienbein, Ingo; Yu, Ji-Young (2019). nCTEQ PDFs and the strange PDF at LHC - Vector boson production in heavy ion collisions. In: XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects, Torino, Italy, 8 April 2019 - 12 April 2019.

Abstract

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 p-Pb LHC W/Z vector boson data.

Abstract

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 p-Pb LHC W/Z vector boson data.

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Item Type:Conference or Workshop Item (Speech), not_refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Event End Date:12 April 2019
Deposited On:05 Feb 2020 13:12
Last Modified:29 Jul 2020 14:04
Publisher:SISSA
Series Name:PoS - Proceedings of Science
ISSN:1824-8039
OA Status:Hybrid
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.22323/1.352.0024

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