The photon PDF from high-mass Drell–Yan data at the LHC

Giuli, F.

doi:10.1140/epjc/s10052-017-4931-5

The photon PDF from high-mass Drell–Yan data at the LHC

Journal Article · Thu Jun 15 00:00:00 EDT 2017 · European Physical Journal. C, Particles and Fields

DOI:https://doi.org/10.1140/epjc/s10052-017-4931-5· OSTI ID:1424585

Giuli, F. ^[1]

Univ. of Oxford (United Kingdom); University of Oxford, UK

Achieving the highest precision for theoretical predictions at the LHC requires the calculation of hard-scattering cross sections that include perturbative QCD corrections up to (N)NNLO and electroweak (EW) corrections up to NLO. Parton distribution functions (PDFs) need to be provided with matching accuracy, which in the case of QED effects involves introducing the photon parton distribution of the proton, xγ(x,Q2) . In this work a determination of the photon PDF from fits to recent ATLAS measurements of high-mass Drell–Yan dilepton production at $$\sqrt{s}$$=8 TeV is presented. This analysis is based on the xFitter framework, and has required improvements both in the APFEL program, to account for NLO QED effects, and in the aMCfast interface to account for the photon-initiated contributions in the EW calculations within MadGraph5_aMC@NLO. The results are compared with other recent QED fits and determinations of the photon PDF, consistent results are found.

View Accepted Manuscript (DOE)

Research Organization:: European Organization for Nuclear Research (CERN), Geneva (Switzerland)

Sponsoring Organization:: European Research Council (ERC); German Federal Ministry of Education and Research (BMBF); Joint Institute for Nuclear Research (JINR); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: and the xFitter Developers’ team

Grant/Contract Number:: SC0010129

OSTI ID:: 1424585

Alternate ID(s):: OSTI ID: 22622750

Journal Information:: European Physical Journal. C, Particles and Fields, Journal Name: European Physical Journal. C, Particles and Fields Journal Issue: 6 Vol. 77; ISSN 1434-6044

Publisher:: SpringerCopyright Statement

Country of Publication:: United States

Language:: English

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Can New Physics hide inside the proton? Carrazza, Stefano; Degrande, Celine; Iranipour, Shayan arXiv https://doi.org/10.48550/arxiv.1905.05215	text	January 2019

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