2019/07/31 by Tie-Jiun Hou, Zhite Yu, Sayipjamal Dulat +4
Mathematics · Physics and Astronomy · #Algorithm #Applied mathematics #Computer science #Distribution function #Eigenvalues and eigenvectors #Hessian matrix #High-Energy Particle Collisions Research #Large Hadron Collider #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Set (abstract data type) #Statistical physics #hep-ex #hep-lat #hep-ph
paper · pdf · doi:10.1103/physrevd.100.114024
published as Phys. Rev. D 100, 114024 (2019) · An appendix was added
openalex created_date 2019/08/13 · arxiv created 2019/12/02 · openalex publication_date 2019/12/13 · arxiv updated 2019/12/18 · openalex updated_date 2026/08/06
In an earlier publication, we introduced the software package Error PDF Updating Method Package (epump) 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 epump program with a detailed comparison against a full global analysis, and we demonstrate the potential of 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 and Z boson and top quark pair differential distributions on the CT14HERA2 PDFs.