Jul 15 – 19, 2019
US/Eastern timezone

Updating and Optimizing Error PDFs with ePump

Jul 16, 2019, 5:20 PM
2220 A Chair : Pavel Nadolsky

2220 A Chair : Pavel Nadolsky

PDFs/alpha_S/Soft PDFs/Soft/Alpha_S I


Carl Schmidt (Michigan State University)


We present a a software package, ePump (error PDF Updating Method Package), that can be used to update or optimize a set of PDFs, including the best-fit and Hessian eigenvector pairs of PDF sets, and also to update any other set of observables, in the Hessian approach. After validating the program with a comparison against a full global analysis, we use ePump to estimate the impact of several recent LHC data, including measurements of W and Z boson and top quark pair differential distributions, on the CT14HERA2 PDFs.

Primary author

Carl Schmidt (Michigan State University)


C.-P. Yuan (Michigan State University) Jon Pumplin (Michigan State University) Tie-Jiun Hou (Northeastern University, Shenyang, China) Zhite Yu (Michigan State University)

Presentation materials