Constraining the nuclear gluon PDF with inclusive hadron production data

A. Kusina; F. I. Olness; I. Schienbein; J.Y. Yu; K. F. Muzakka; K. Kova\v{r}\'ik; L. A. Husov\'a; M. Klasen; P. Duwent\"aster; T. Je\v{z}o

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Constraining the nuclear gluon PDF with inclusive hadron production data

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arxiv 2107.14514 v1 pith:RXLD3DAD submitted 2021-07-30 hep-ph nucl-th

P. Duwentäster , L. A. Husová , T. Ježo , M. Klasen , K. Kovařík , A. Kusina , K. F. Muzakka , F. I. Olness

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I. Schienbein J.Y. Yu

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keywords datanuclearanalysisinclusiveconstraininggluonhadronncteq

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The nuclear parton distribution functions (nPDFs) of gluons are known to be difficult to determine with fits of deep inelastic scattering (DIS) and Drell-Yan (DY) data alone. Therefore, the nCTEQ15 analysis of nuclear PDFs added inclusive neutral pion production data from RHIC to help in constraining the gluon. In this analysis, we present a new global analysis of nuclear PDFs based on a much larger set of single inclusive light hadron data from RHIC and the LHC. Using our new nCTEQ code (nCTEQ++) with an optimized version of INCNLO we study systematically the limitations of the theory and the impact of the fragmentation function uncertainty.

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