Differential NNLO Drell-Yan interpolation grids are released, with closure tests showing sub-per-mille accuracy and a validation that PDF fits are unaffected by the K-factor approximation.
PineAPPL: NLO EW corrections for PDF processes
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
Modern parton distribution function (PDF) determinations either neglect higher-order corrections in the electroweak (EW) coupling or implement them approximately for a subset of PDF processes. We present a new tool, PineAPPL, which supports perturbative correction in arbitrary powers of the EW and strong coupling constant, and stores theoretical predictions independently of the used PDFs in so-called interpolation grids. These are the foundation of any PDF determination, and will allow us to perform a PDF fit taking into account EW corrections for all processes consistently. Apart from PDF determinations PineAPPL can also be used in precision phenomenology to study the impact of different choices of PDF sets, without rerunning the time-consuming computation. As an application of this tool we show Drell-Yan (DY) lepton-pair production were larger effects of NLO EW corrections can be seen that will potentially influence the PDF fit and comment about which observables are particularly suited and NLO EW PDF fit and which are not.
fields
hep-ph 1years
2025 1verdicts
ACCEPT 1representative citing papers
citing papers explorer
-
Fast interpolation grids for the Drell-Yan process
Differential NNLO Drell-Yan interpolation grids are released, with closure tests showing sub-per-mille accuracy and a validation that PDF fits are unaffected by the K-factor approximation.