| Article | |
| Report number | arXiv:2401.08749 ; TIF-UNIMI-2023-17 ; Edinburgh 2023/19 ; CERN-TH-2023-159 |
| Title | Photons in the proton: implications for the LHC |
| Author(s) |
Ball, Richard D. (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Barontini, Andrea (INFN, Milan ; Milan U.) ; Candido, Alessandro (INFN, Milan ; Milan U. ; CERN) ; Carrazza, Stefano (INFN, Milan ; Milan U.) ; Cruz-Martinez, Juan (CERN) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Forte, Stefano (INFN, Milan ; Milan U.) ; Giani, Tommaso (Vrije U., Amsterdam ; NIKHEF, Amsterdam) ; Hekhorn, Felix (INFN, Milan ; Milan U. ; Jyvaskyla U. ; Helsinki U.) ; Kassabov, Zahari (Cambridge U., DAMTP) ; Laurenti, Niccolò (INFN, Milan ; Milan U.) ; Magni, Giacomo (Vrije U., Amsterdam ; NIKHEF, Amsterdam) ; Nocera, Emanuele R. (Turin U.) ; Rabemananjara, Tanjona R. (Vrije U., Amsterdam ; NIKHEF, Amsterdam) ; Rojo, Juan (Vrije U., Amsterdam ; NIKHEF, Amsterdam) ; Schwan, Christopher (Wurzburg U.) ; Stegeman, Roy (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Ubiali, Maria (Cambridge U., DAMTP) |
| Publication | 2024-05-28 |
| Imprint | 2024-01-16 |
| Number of pages | 32 |
| Note | 32 pages, 19 figures. Final; version, as published on EPJC. Pheno discussion in Sect 4.2 improved, a few typos corrected |
| In: | Eur. Phys. J. C 84 (2024) 540 |
| DOI | 10.1140/epjc/s10052-024-12731-8 |
| Subject category | hep-ph ; Particle Physics - Phenomenology |
| Accelerator/Facility, Experiment | NNPDF CERN LHC |
| Abstract | We construct a set of parton distribution functions (PDFs), based on the recent NNPDF4.0 PDF set, that also include a photon PDF. The photon PDF is constructed using the LuxQED formalism, while QED evolution accounting for O(alpha), O(alpha alphas) and O(alpha^2) corrections is implemented and benchmarked by means of the EKO code. We investigate the impact of QED effects on NNPDF4.0, and compare our results both to our previous NNPDF3.1QED PDF set and to other recent PDF sets that include the photon. We assess the impact of photon-initiated processes and electroweak corrections on a variety of representative LHC processes, and find that they can reach the 5% level in vector boson pair production at large invariant mass. |
| Copyright/License | preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © 2024-2025 The Author(s) (License: CC-BY-4.0), sponsored by SCOAP³ |
Corresponding record in: Inspire
Registre creat el 2024-01-19, darrera modificació el 2024-08-16
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