Resolved photons in SHERPA

Höche, Stefan; Krauss, Frank; Meinzinger, Peter

doi:10.1140/epjc/s10052-024-12551-w

Title: Resolved photons in SHERPA

Journal Article · 20 February 2024 · European Physical Journal. C, Particles and Fields (Online)

DOI: https://doi.org/10.1140/epjc/s10052-024-12551-w · OSTI ID:2204653

Höche, Stefan ^[1]; Krauss, Frank ^[2];

^[2]

Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Durham Univ. (United Kingdom)

We present the first complete simulation framework, in the SHERPA event generator, for resolved photon interactions at next-to leading order accuracy. It includes photon spectra obtained through the equivalent-photon approximation, parton distribution functions to parametrize the hadronic structure of quasi-real photons, the matching of the parton shower to next-to leading order QCD calculations for resolved photon cross sections, and the modelling of multiple-parton interactions. We validate our framework against a wide range of photo-production data from LEP and HERPA experiments, observing good overall agreement. We identify important future steps relevant for high-quality simulations at the planned Electron–Ion Collider.

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Research Organization:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 2204653

Report Number(s):: FERMILAB-PUB--23-623-T; IPPP/23/59; arXiv:2310.18674; oai:inspirehep.net:2715355

Journal Information:: European Physical Journal. C, Particles and Fields (Online), Journal Name: European Physical Journal. C, Particles and Fields (Online) Journal Issue: 2 Vol. 84; ISSN 1434-6052

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

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