Calculations for deep inelastic scattering using fast interpolation grid techniques at NNLO in QCD and the extraction of alpha(s) from HERA data

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Date
2019-10Type
- Journal Article
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Cited 10 times in
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Abstract
The extension of interpolation-grid frameworks for perturbative QCD calculations at next-to-next-to-leading order (NNLO) is presented for deep inelastic scattering (DIS) processes. A fast and flexible evaluation of higher-order predictions for any a posteriori choice of parton distribution functions (PDFs) or value of the strong coupling constant is essential in iterative fitting procedures to extract PDFs and Standard Model parameters as well as for a detailed study of the scale dependence. The APPLfast project, described here, provides a generic interface between the parton-level Monte Carlo program NNLOjet and both the APPLgrid and fastNLO libraries for the production of interpolation grids at NNLO accuracy. Details of the interface for DIS processes are presented together with the required interpolation grids at NNLO, which are made available. They cover numerous inclusive jet measurements by the H1 and ZEUS experiments at HERA. An extraction of the strong coupling constant is performed as an application of the use of such grids and a best-fit value of αs(MZ) = 0.1170 (15)exp (25)th is obtained using the HERA inclusive jet cross section data. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000372738Publication status
publishedExternal links
Journal / series
The European Physical Journal CVolume
Pages / Article No.
Publisher
SpringerOrganisational unit
08833 - Gehrmann-De Ridder, Aude (Tit.-Prof.)
Funding
172478 - QCD effects in Higgs-strahlung at the LHC (SNF)
340983 - High Precision Simulation of particle collisions at the LHC (EC)
Related publications and datasets
Is referenced by: https://doi.org/10.3929/ethz-b-000515125
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Show all metadata
Citations
Cited 10 times in
Web of Science
Cited 12 times in
Scopus
ETH Bibliography
yes
Altmetrics