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Updating and Optimizing Error PDFs in the Hessian Approach. Part II

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arxiv 1907.12177 v2 pith:HXS2OP7U submitted 2019-07-29 hep-ph hep-exhep-lat

Tie-Jiun Hou , Zhite Yu , Sayipjamal Dulat , Carl Schmidt , C.-P. Yuan This is my paper · ORCID
classification hep-phhep-exhep-lat
keywords pdfsepumperrorhessianpackagetextttapproachupdate
verification ladder T0 review T1 audit T2 compute T3 formal

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abstract

In an earlier publication, we introduced the software package, {\tt \texttt{ePump}} (error PDF Updating Method Package), that can be used to update or optimize a set of parton distribution functions (PDFs), including the best-fit PDF set and Hessian eigenvector pairs of PDF sets (i.e., error PDFs), and to update any other set of observables, in the Hessian approach. Here, we validate the {\tt \texttt{ePump}} program with a detailed comparison against a full global analysis, and we demonstrate the potential of {\tt \texttt{ePump}} by presenting selected phenomenological applications relevant to the Large Hadron Collider. For example, we use the package to estimate the impact of the recent LHC data of the measurements of $W$, $Z$ boson and top quark pair differential distributions on the CT14HERA2 PDFs.

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Cited by 3 Pith papers

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