APFELgrid: a high performance tool for parton density determinations. We present a new software package designed to reduce the computational burden of hadron collider measurements in Parton Distribution Function (PDF) fits. The APFELgrid package converts interpolated weight tables provided by APPLgrid files into a more efficient format for PDF fitting by the combination with PDF and αs evolution factors provided by APFEL. This combination significantly reduces the number of operations required to perform the calculation of hadronic observables in PDF fits and simplifies the structure of the calculation into a readily optimised scalar product. We demonstrate that our technique can lead to a substantial speed improvement when compared to existing methods without any reduction in numerical accuracy.
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References in zbMATH (referenced in 3 articles , 1 standard article )
Showing results 1 to 3 of 3.
- Gao, Jun; Harland-Lang, Lucian; Rojo, Juan: The structure of the proton in the LHC precision era (2018)
- Valerio Bertone, Stefano Carrazza, Nathan P. Hartland: APFELgrid : A high performance tool for parton density determinations (2017) not zbMATH
- V. Bertone, M. Botje, D. Britzger, S. Camarda, A. Cooper-Sarkar, F. Giuli, A. Glazov, A. Luszczak, F. Olness, R. Placakyte, V. Radescu, W. Slominksi, O. Zenaiev: xFitter 2.0.0: An Open Source QCD Fit Framework (2017) arXiv