Photons in the proton : implications for the LHC
Ball, R. D., Barontini, A., Candido, A., Carrazza, S., Cruz-Martinez, J., Del Debbio, L., Forte, S., Giani, T., Hekhorn, F., Kassabov, Z., Laurenti, N., Magni, G., Nocera, E. R., Rabemananjara, T. R., Rojo, J., Schwan, C., Stegeman, R., & Ubiali, M. (2024). Photons in the proton : implications for the LHC. European Physical Journal C, 84(4), Article 540. https://doi.org/10.1140/epjc/s10052-024-12731-8
Julkaistu sarjassa
European Physical Journal CPäivämäärä
2024Tekijänoikeudet
© 2024 the Authors
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.
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SpringerISSN Hae Julkaisufoorumista
1434-6044Asiasanat
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https://converis.jyu.fi/converis/portal/detail/Publication/216000161
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Suomen AkatemiaRahoitusohjelmat(t)
Akatemiatutkija, SA; Huippuyksikkörahoitus, SALisätietoja rahoituksesta
R. D. B, L. D. D., and R. S. are supported by the U.K. Science and Technology Facility Council (STFC) grant ST/T000600/1. F. H. is supported by the Academy of Finland project 358090 and is funded as a part of the Center of Excellence in Quark Matter of the Academy of Finland, project 346326. E. R. N. is supported by the Italian Ministry of University and Research (MUR) through the “Rita Levi-Mont ...
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