Data di Pubblicazione:
2024
Citazione:
Photons in the proton: implications for the LHC / R.D. Ball, A. Barontini, A. Candido, S. Carrazza, J. Cruz-Martinez, L. Del Debbio, S. Forte, T. Giani, F. Hekhorn, Z. Kassabov, N. Laurenti, G. Magni, E.R. Nocera, T.R. Rabemananjara, J. Rojo, C. Schwan, R. Stegeman, M. Ubiali. - (2024 Jan 16).
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.
Tipologia IRIS:
24 - Pre-print
Keywords:
High Energy Physics - Phenomenology; High Energy Physics - Phenomenology
Elenco autori:
R.D. Ball, A. Barontini, A. Candido, S. Carrazza, J. Cruz-Martinez, L. Del Debbio, S. Forte, T. Giani, F. Hekhorn, Z. Kassabov, N. Laurenti, G. Magni, E.R. Nocera, T.R. Rabemananjara, J. Rojo, C. Schwan, R. Stegeman, M. Ubiali
Link alla scheda completa:
Link al Full Text: